Use standard primary color for agent feedback

[Copilot]

Summary

• use the shared default primary button styles for the agent feedback Accept action
• add regression coverage for the created-state button colors

Testing

• npm run transpile-client
• npm run gulp compile-client (reported 0 TypeScript errors before the local compiler process exited with an unknown code)
• focused Electron test attempted under Xvfb; blocked by the generated widget module importing its existing raw CSS file

[vs-code-engineering]

This PR will be automatically cherry-picked to release/1.136 when merged.

[github-actions]

Screenshot Changes

Base: ccfec4b8 Current: 7ccfa544

Changed (6)

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedPRReviewOnly/Dark

Before	After

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedPRReviewOnly/Light

Before	After

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedAllSourcesMixed/Dark

Before	After

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedAllSourcesMixed/Light

Before	After

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedFocusedPRReview/Dark

Before	After

sessions/agentFeedback/agentFeedbackEditorWidget/ExpandedFocusedPRReview/Light

Before	After

4 insignificant change(s) omitted (≤20 px, Δ≤2). See CI logs for details.

[Benjamin Christopher Simmonds (benibenj)]

Copilot the badge for example "PR Review" in the agent feedback widget should also be blue instead of purple (same or similar blue as primary button blue)

[Copilot]

Copilot the badge for example "PR Review" in the agent feedback widget should also be blue instead of purple (same or similar blue as primary button blue)

Updated the feedback type badge to use the primary button blue token in 51119a0.