fix: fixed issue of Improper encoding of curly braces in Request Sample

[SB-pradeep-bande]

Motivation and Context

Improper encoding of curly braces in request sample
STOP-1518

Description

When you select an option from the dropdown for Body it stays selected for 10-15 seconds and then reverts to the top option.

How Has This Been Tested?

It was tested locally.

Screenshot(s)/recordings(s)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• This PR's code follows as closely as possible the coding style/guidelines of this project.
• I have added error reporting and followed the error reporting guidelines.
• I have added event tracking and followed the event tracking guidelines.
• I have updated any internal docs to reflect this PR's changes.
• If this PR affects existing features or includes UI changes, I have reached out to the Tech Writers team OR added the s/needs-docs label.
• I have added automated tests (unit/integration/e2e/other) to cover my changes.
• All new and existing tests pass locally (excluding flaky CI tests).
• If this PR completes a story or makes a substantial UX change, demo it to the Product Manager.

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