Updating frontend assets to add header for open-in-editor sources panel devtools button (#54927)

Summary:
Updating front end assets for react/react-native-devtools-frontend#229

The "Open in Editor" button in the Sources tab was failing with a 400 Bad Request error. This was because the openStackFrameInEditor request was missing the Content-Type header. Added the appropriate content type header to fix the request.

## Changelog:

[GENERAL] [INTERNAL] - Fix "Open in Editor" button in Sources tab returning 400 Bad Request

Pull Request resolved: #54927

Test Plan:
Open React Native DevTools
Go to Sources tab
Click "Open in Editor" button on a stack frame
Verify the file opens in the editor without a 400 error

Reviewed By: vzaidman

Differential Revision: D89464184

Pulled By: emily8rown

fbshipit-source-id: 27190e05e11d96bdd9982a4e057c3ef225975bc4

Author: emily8rown

packages/debugger-frontend/BUILD_INFO

@@ -1,5 +1,5 @@
-@generated SignedSource<<3e785aa8e1e511007bb7bc59210a9a1a>>
-Git revision: c85f7e933aa685da64ee73e398bf06d33d9d2f3c
+@generated SignedSource<<ed580785f8afa314ec8cc43c7523f469>>
+Git revision: 1f006e22bfad4d66df4786d6d775c15101c66e5d
 Built with --nohooks: false
 Is local checkout: false
 Remote URL: https://github.com/facebook/react-native-devtools-frontend