fix(amazonq): escaping user input to mitigate xss issue

[laileni-aws]

Problem

• XSS issue fix PR is causing cache misses because the history is different (with escaped HTML)

Solution

• Escape userInput as part of initial sanitizeInput this should cover all the cases like
  • If user reloads IDE, Q use chat history to show previous tabs.
  • If user clicks on History icon then Q get data from chat history to show in the UI.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 59.92%. Comparing base (d56bfa1) to head (a8a1720).

Files with missing lines	Patch %	Lines
...nguage-server/agenticChat/agenticChatController.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2360      +/-   ##
==========================================
- Coverage   59.92%   59.92%   -0.01%     
==========================================
  Files         258      258              
  Lines       58236    58235       -1     
  Branches     3552     3553       +1     
==========================================
- Hits        34899    34898       -1     
  Misses      23271    23271              
  Partials       66       66              

Flag	Coverage Δ
unittests	59.92% <87.50%> (-0.01%)	⬇️

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