fix: fallback to recommendedQuote when selectedQuote is stale

[micaelae]

Explanation

Fixing a bug which causes the UI to get a nonexistent activeQuote on refresh. This updates the selector so it checks whether the selectedQuote exists in the sorted quotes list first, and falls back on the recommendedQuote otherwise

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

---

Note

Low Risk
Small, well-tested change to quote selection logic; primary risk is minor behavior change in how activeQuote is chosen when quotes refresh.

Overview
Fixes stale quote selection by updating selectActiveQuote (used by selectBridgeQuotes) to only return selectedQuote if its requestId still exists in sortedQuotes, otherwise falling back to the recommendedQuote.

Updates unit tests to cover both the valid-selected-quote case and the stale-selected-quote fallback, and adds a changelog entry plus minor JSDoc punctuation/clarifications in QuoteMetadata.

^{Written by Cursor Bugbot for commit 517219a. This will update automatically on new commits. Configure here.}