ENGG-5319 : Fix form-urlencoded body handling for GET requests

[srbh777]

Summary

• Removed GET from the form-urlencoded body processing exclusion list so that GET requests with application/x-www-form-urlencoded content type are properly encoded

Context

The web app now allows GET request bodies in desktop mode. All content types (JSON, raw, multipart) were already handled correctly for GET, but form-urlencoded was explicitly skipped — causing the raw key-value pair array to be sent
instead of properly encoded URLSearchParams.

Changes

• makeApiClientRequest.js: Changed !["GET", "HEAD"].includes(method) to method !== "HEAD" in the form-urlencoded body processing condition

Test plan

• Send GET request with application/x-www-form-urlencoded body → server should receive properly encoded form data (e.g. key1=value1&key2=value2)
• Send GET request with JSON body → should still work as before
• Send GET request with raw body → should still work as before
• Send POST/PUT/PATCH with form-urlencoded body → should still work as before
• HEAD requests should still have no body

[linear]

ENGG-5319 Body Support in Get Request