RI-8160: clear similarity search results

[dantovska]

What

• New ClearResultsAction component (eraser icon, responsive EmptyButton / IconButton) — replaces the "+ Add elements" button in the vector-set subheader while similarity-search results are visible.
• VectorSetKeySubheader is now purely presentational: showPreview, previewCount, total, hasSimilarityResults, and onClearResults are passed in by VectorSetDetails (no more vectorSetDataSelector or useSimilaritySearchResults calls inside the subheader).
• VectorSetDetails dispatches only clearSimilaritySearch on click — the Redis command preview slice and the form state are intentionally left untouched so the user can still see / re-run the command after clearing.
• Test-ids follow the new clear-results-btn base + optional testIdPrefix pattern → subheader passes testIdPrefix="similarity-search" → final id similarity-search-clear-results-btn.

Screen.Recording.2026-05-11.at.18.28.57.mov

Testing

---

Note

Low Risk
Low risk UI/state wiring change that only resets the vector-set similarity-search results slice; main risk is minor UX/regression around when the subheader swaps actions and how tests/selectors rely on updated props/test ids.

Overview
Adds a responsive "Clear results" action to the vector set details view that appears when similarity-search matches are displayed, letting users clear matches and return to the normal element list.

Moves similarity-search state handling up into VectorSetDetails (dispatching clearSimilaritySearch) and makes VectorSetKeySubheader purely presentational by passing hasSimilarityResults/onClearResults; updates/extends unit tests and introduces the new ClearResultsAction component with a consistent, prefixable test id.

^{Reviewed by Cursor Bugbot for commit 796ef1d. Bugbot is set up for automated code reviews on this repo. Configure here.}

[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

---

^{Security scan by Jit}

[github-actions]

Code Coverage - Frontend unit tests

St.❔	Category	Percentage	Covered / Total
🟢	Statements	82.73%	24443/29547
🟡	Branches	67.94%	10273/15121
🟡	Functions	77.87%	6598/8473
🟢	Lines	83.19%	23882/28707

Test suite run success

6867 tests passing in 794 suites.

Report generated by 🧪jest coverage report action from 796ef1d