feat(FR-2451): add Prometheus Query Preset create modal

[agatha197]

Resolves #6357 (FR-2451)

Stacked on top of #7084.

Summary

Sub-task 3 of the Prometheus Query Preset Admin feature (.specs/draft-auto-scaling-rule-management/dev-plan.md -> Sub-task 3). Adds the Create Preset modal and wires it to the toolbar's "Add Preset" button (which was disabled in #7084).

• New PrometheusQueryPresetEditorModal.tsx: a unified Create/Edit modal driven by an optional fragment ref. This PR ships the Create path; Sub-task 4 (next PR in the stack) will fill in the Edit path on the same modal.
• Form fields (Antd Form, layout="vertical"):
  • name (required, with "must be unique" hint)
  • description (optional, TextArea)
  • categoryId (optional, Select driven by a sibling prometheusQueryPresetCategories query)
  • rank (InputNumber, default 0)
  • metricName (required)
  • queryTemplate (required, multi-line TextArea)
  • timeWindow (optional plain Input, e.g. 5m)
  • options.filterLabels / options.groupLabels (Select mode="tags")
• Wires adminCreatePrometheusQueryPreset(input: CreateQueryDefinitionInput!) via Relay useMutation. On success: success toast, transition-driven updateFetchKey() to refetch the list, and modal close. On error: keep modal open and surface the error.
• Hooks the toolbar Add button (added disabled in Sub-task 2) to open the modal in create mode.

Notes / risk callouts

• Empty categories: prometheusQueryPresetCategories may return [] in dev environments. The form still submits cleanly with categoryId = null and the Select shows a "No category" empty-state message.
• filterLabels / groupLabels are required [String!]! in CreateQueryDefinitionInput but accept []. We submit [] whenever the user leaves the tags input untouched.
• The categories query (prometheusQueryPresetCategory(id: UUID!)/prometheusQueryPresetCategories) returns QueryPresetCategory.id: UUID!, which matches the CreateQueryDefinitionInput.categoryId: UUID field. No toLocalId() conversion is needed.
• The fragment includes the same fields the list fragment already exposes; Sub-task 4 will reuse this fragment for the edit path.

i18n keys added (prometheusQueryPreset.*)

Description, Category, NoCategory, Rank, FilterLabels, GroupLabels, CreatePreset, EditPreset, NameRequired, NameMustBeUnique, MetricNameRequired, QueryTemplateRequired, SuccessfullyCreated. English source only.

Verification

--- Relay: PASS ---
--- Lint: PASS ---
--- Format: PASS ---
--- TypeScript: PASS ---
=== ALL PASS ===

[agatha197]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• test(FR-2451): add E2E tests for prometheus preset CRUD, filter, sort, and table settings #7108 : 2 dependent PRs (#7109 , #7110 )
• feat(FR-2451): polish preset list — BAINameActionCell, copyable QueryTemplate, column settings, i18n #7095
• feat(FR-2451): add Prometheus Query Preset edit modal with live preview #7094
• feat(FR-2451): add Prometheus Query Preset delete confirmation #7086
• feat(FR-2451): add Prometheus Query Preset create modal #7085 👈 (View in Graphite)
• feat(FR-2451): implement Prometheus Query Preset list table #7084
• feat(FR-2451): add prometheus tab scaffolding to AdminServingPage #7082
• main

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Coverage report for ./react

St.❔	Category	Percentage	Covered / Total
🔴	Statements	8.99% (-0.02% 🔻)	1858/20673
🔴	Branches	8.15% (-0.03% 🔻)	1187/14571
🔴	Functions	5.28% (-0.01% 🔻)	296/5607
🔴	Lines	8.72% (-0.02% 🔻)	1749/20056

Show new covered files 🐣

St.❔	File	Statements	Branches	Functions	Lines
🔴	... / PrometheusQueryPresetEditorModal.tsx	0%	0%	0%	0%

Test suite run success

865 tests passing in 40 suites.

Report generated by 🧪jest coverage report action from 66852a9