fix: Double decode issue for query & diagnostics tabs

[Assem-Uber]

Summary

Fixes double decode/encode of URL params on the query & diagnostics (and related) flows so route params are not decoded or encoded twice.

Changes

• Use requestParams.params directly (no extra decode/encode).

Fix Plans

• Fix custom middleware double decoding ✅
• Fix Summary page/apis double decoding ✅
• Fix tasklist page/apis double decoding ✅
• Fix workflow query & diagnostics api double decoding
• Fix workflow actions double decoding
• Fix domain page/apis double decoding

Testing

Tested by logging query params from endpoints

    requestParams: {
      "domain": "default",
      "cluster": "cluster0",
      "workflowId": "#$@^%$@^#%$^&@",
      "runId": "e00efb14-c148-4f48-be8f-f4fc066e2d97"
    }