Add inline validation for preset fields with regex pattern

[Shyam-123pandey]

Add inline validation for fields that define a regex pattern

Summary

This PR adds inline validation support for preset fields that define a pattern (regex).

If a field includes a regex pattern and the entered value does not match it, an informational message is displayed directly below the input field.

Behavior

• Validation runs on blur / change, not while typing.
• The message appears only after the user finishes editing the field.
• If the value becomes valid, the message disappears.
• This does not block saving.
• This does not create or modify issues in the issues panel.
• It only applies to fields that define a pattern.

Why

Some fields may define a regex pattern but currently provide no direct feedback when the value does not match the expected format.

This change improves UX by giving contextual, field-level feedback after editing is complete, while staying consistent with iD’s existing interaction model (no validation on every keystroke).

Scope

• Changes limited to uiFieldText.
• No changes to the validation engine.
• No preset/schema changes.

Closes #10769

[Copilot]

Pull request overview

Adds inline, non-blocking validation feedback for text inputs whose preset field definition includes a regex pattern, improving UX by showing/hiding a message as the user types.

Changes:

• Add a validation message element to uiFieldText’s DOM structure.
• Validate input values against field.pattern during change() and toggle the message visibility/text accordingly.

[Shyam-123pandey]

Good After noon Sir, Almost things have been resolved just check , I have doubt on one issue as copilot suggested please check above, so suggest for that.