Problem

• Message should be provided as part of header body but right now its passed as body directly.
  
• In existing IDE experience, If user asks a second question in the same chat tab, IDE overrides the first workflow read files with second workflow read files because session.setMessageIdToUpdate is unchanged(not defined to undefined after completion of first request.)

Solution

• Fixed in this as passing as part of header body.
  
• Cleaning the session.setMessageIdToUpdate value so for second request IDE won't update the first request read fileTree.
  

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
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