test(combobox): migrate filtering tests to browser mode

[jcfranco]

Related Issue: #14012

Summary

✨🧪✨

[Copilot]

Pull request overview

Ports combobox filtering-related E2E coverage from Stencil’s newE2EPage runner to the Vitest browser-mode runner to address an unstable filtering/toggling test (Issue #14012).

Changes:

• Removed the filtering test suite from combobox.e2e.ts (Stencil E2E).
• Added a new describe("filtering") suite to combobox.browser.e2e.tsx using mount, userEvent, and browser-mode locators/commands.
• Introduced browser-mode debounce handling via DEBOUNCE.filter and mouse commands utilities.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
packages/components/src/components/combobox/combobox.e2e.ts	Removes the Stencil E2E filtering test suite being migrated.
packages/components/src/components/combobox/combobox.browser.e2e.tsx	Adds browser-mode implementations of the combobox filtering tests and related utilities/imports.

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[github-actions]

This PR has been automatically marked as stale because it has not had recent activity. Please close your PR if it is no longer relevant. Thank you for your contributions.

[driskull]

Nice!

[jcfranco]

Spotted an unexpected error in the migrated test. 🫠 I'll take a look and will merge after resolving.

[github-actions]

This PR has been automatically marked as stale because it has not had recent activity. Please close your PR if it is no longer relevant. Thank you for your contributions.