SearchableEnum crashes when enum value is removed

[SzynalM]

Repro:

• Create enum with 2 values (A and B)
• Create script with the SearchableEnum attribute
• Create a prefab with that script and set the enum value to B in the editor - save the prefab
• Remove the B enum value in code
• Open the prefab after compilation
• Attribute drawer throws exception

IndexOutOfRangeException: Index was outside the bounds of the array.
MyBox.Internal.SearchableEnumAttributeDrawer.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label) (at ./Library/PackageCache/com.domybest.mybox@efb08f2318b8/Attributes/SearchableEnumAttribute.cs:85)
UnityEditor.PropertyDrawer.OnGUISafe (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.Rect visibleArea) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.Rect visibleArea) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.EditorGUI.PropertyFieldInternal (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.EditorGUI.PropertyField (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
MyBox.Internal.ReadOnlyAttributeDrawer.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label) (at ./Library/PackageCache/com.domybest.mybox@efb08f2318b8/Attributes/ReadOnlyAttribute.cs:59)
UnityEditor.PropertyDrawer.OnGUISafe (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.Rect visibleArea) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditorInternal.ReorderableList+Defaults.DrawElement (UnityEngine.Rect rect, UnityEditor.SerializedProperty element, System.Object listItem, System.Boolean selected, System.Boolean focused, System.Boolean draggable, System.Boolean editable) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditorInternal.ReorderableList.DoListElements (UnityEngine.Rect listRect, UnityEngine.Rect visibleRect) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditorInternal.ReorderableList.DoList (UnityEngine.Rect rect, UnityEngine.Rect visibleRect) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditorInternal.ReorderableListWrapper.DrawChildren (UnityEngine.Rect listRect, UnityEngine.Rect headerRect, UnityEngine.Rect sizeRect, UnityEngine.Rect visibleRect, UnityEngine.EventType previousEvent) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditorInternal.ReorderableListWrapper.Draw (UnityEngine.GUIContent label, UnityEngine.Rect r, UnityEngine.Rect visibleArea, System.String tooltip, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.Rect visibleArea) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.Rect visibleArea) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUI (UnityEngine.Rect position, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.PropertyHandler.OnGUILayout (UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.GUILayoutOption[] options) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.EditorGUILayout.PropertyField (UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren, UnityEngine.GUILayoutOption[] options) (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEditor.EditorGUILayout.PropertyField (UnityEditor.SerializedProperty property, System.Boolean includeChildren, UnityEngine.GUILayoutOption[] options) (at <8081513dc2364383b8289d30d2169b2e>:0)
Unity.Netcode.Editor.NetworkBehaviourEditor.OnInspectorGUI () (at ./Library/PackageCache/com.unity.netcode.gameobjects@60f197570e52/Editor/NetworkBehaviourEditor.cs:298)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass82_0.<CreateInspectorElementUsingIMGUI>b__1 () (at <8081513dc2364383b8289d30d2169b2e>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)