Add Search/Filter Functionality to API Provider Selection in Settings

[GOODBOY008]

This PR enhances the provider selection UI in the settings by adding a search/filter functionality.

• Users can now type in a search box to filter the list of API providers, making it easier and faster to find the desired provider.
• The UI uses a popover with a search input and dynamically filtered provider list.
• Internationalization (i18n) support is included for new search-related strings.
• Unit tests have been updated to cover the new functionality.

Test Procedure

• Open the settings page and click the provider selection button.
• Type in the search box to filter providers by name.
• Verify that only matching providers are shown and that selecting a provider updates the selection.
• Clear the search to see the full list again.
• Confirm that the "No providers found" message appears when there are no matches.
• Run the updated unit tests in ApiOptions.spec.tsx to ensure coverage for the new functionality.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue.
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (if applicable).

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Important

Enhances provider selection UI with search/filter functionality and updates tests and i18n support.

• Behavior:
  • Adds search/filter functionality to provider selection UI in ApiOptions.tsx using a popover with a search input.
  • Displays "No providers found" message when no matches are found.
  • Updates selection when a provider is selected from the filtered list.
• Internationalization:
  • Adds i18n support for new search-related strings in multiple locale files.
• Testing:
  • Updates unit tests in ApiOptions.spec.tsx to cover new search functionality.
  • Mocks UI components in SettingsView.spec.tsx for testing purposes.

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[GOODBOY008]

Link discussion ：#5277

[GOODBOY008]

@mrubens Can you help review this pr ? if you are available.

[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to c68c137.

Security Overview

• 🔎 Scanned files: 26 changed file(s)

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Reply to this PR with @delve-auditor followed by a description of what change you want and we'll auto-submit a change to this PR to implement it.

[daniel-lxs]

Thank you @GOODBOY008!