Migrate navigator.clipboard in reference bubble menu to copyToClipboard

Anish Kumarrequested to merge
gitlab-community/gitlab-org/gitlab:anishisbusy/579483-content-editor-reference-copy into master

What does this MR do and why?

The reference bubble menu copy button called navigator.clipboard.writeText directly, which fails in non-secure contexts. This follows the work in !211222 (merged), which blocks direct use of navigator.clipboard. The component now uses the shared helper copyToClipboard from ~/lib/utils/copy_to_clipboard and the matching eslint-disable comment is removed. The spec now mocks copyToClipboard instead of spying on navigator.clipboard.

Closes #579483.

References

Part of epic &19827.

Screenshots or screen recordings

Not applicable — no visual change.

How to set up and validate locally

  1. Run yarn jest spec/frontend/content_editor/components/bubble_menus/reference_bubble_menu_spec.js.

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This contribution was prepared with the help of an AI assistant. I reviewed the changes and take responsibility for them.

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