Show resource type chips in search results

[ewlarson]

Summary

• replace Subject chips on full search-result cards with Resource Type chips
• keep Theme chips and their existing styling
• link Resource Type chips to the gbl_resourceType_sm search filter
• add regression coverage for chip content, filter URLs, and subject suppression

Why

Subject values are less normalized and can be lengthy, which makes result cards noisy. Resource Type values are more consistent and usually limited to one or two values, so they provide more useful scannable metadata.

User impact

Search results and bookmarked-result cards now show Resource Type and Theme chips beneath the description. Clicking a Resource Type chip opens a filtered search for that value.

Validation

• npm test -- --run — 956 tests passed
• npm run build — passed
• targeted ESLint and Prettier checks for the changed files — passed
• git diff --check — passed

Repository-wide lint and format checks still report pre-existing failures in unrelated files.

Closes #335