feat(ui): add skip schema validation toggle to Application parameters editor (#5111)

[somaz94]

What / Why

Adds a Skip Schema Validation checkbox to the Application Parameters tab editor. When checked, saving parameter changes sends validate=false to the update API, skipping server-side schema validation — matching the existing argocd app set --validate=false CLI capability, which previously had no UI equivalent.

This speeds up common edits (e.g. bumping an image tag) as requested in #5111, where a maintainer confirmed the intent is a skip-validation toggle when editing parameters in the Parameters/Manifest tab (distinct from the sync-operation "Skip Schema Validation" option).

Scope: the single-source Parameters editor (the default for most apps). The multi-source source editor and the Manifest tab are left as follow-ups to keep this PR focused.

How

• EditablePanel gains an opt-in showValidationToggle prop; when set it renders the checkbox in edit mode and forwards {validate: !skipValidation} to its save handler. All other consumers are unchanged (still send {}).
• application-parameters.tsx enables the toggle on the parameters panel and forwards the query to the update call. The unchecked default sends validate=true, which the server treats identically to the previous no-param behavior (server/application/application.go defaults validate := true).

Closes #5111

Checklist

• The title of the PR states what changed and the related issue number (used for the release note).
• The title of the PR conforms to the Title of the PR convention.
• I've included "Closes Add validate=false to ui #5111" in the description to automatically close the associated issue.
• I've updated the UI to expose my feature; the CLI already supports --validate=false on argocd app set.
• Does this PR require documentation updates? — UI-only toggle, no docs change needed.
• I have signed off all my commits as required by DCO.
• I have written unit tests for my change (editable-panel.test.tsx: toggle visibility + validate true/false forwarded on save).
• My build is green — pnpm lint, pnpm test, and pnpm build all pass locally.
• I have added a brief description of why this PR is necessary and what it solves.

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[codecov]

Bundle Report

Changes will increase total bundle size by 698 bytes (0.01%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
argo-cd-ui-array-push	11.25MB	698 bytes (0.01%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: argo-cd-ui-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
main.*.js	698 bytes	3.72MB	0.02%