Fix: Refactor the similarity slider component and modify the style of the dataset-test page #10703 (#10846)

### What problem does this PR solve?

Fix: Refactor the similarity slider component and modify the style of
the dataset-test page

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/locales/en.ts

@@ -191,7 +191,7 @@ export default {
         'This sets the weight of keyword similarity in the combined similarity score, either used with vector cosine similarity or with reranking score. The total of the two weights must equal 1.0.',
       testText: 'Test text',
       testTextPlaceholder: 'Input your question here!',
-      testingLabel: 'Testing',
+      testingLabel: 'Run',
       similarity: 'Hybrid similarity',
       termSimilarity: 'Term similarity',
       vectorSimilarity: 'Vector similarity',