Refactor integration test DecodeJSON calls to use generic return value (#37432)

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Co-authored-by: wxiaoguang <2114189+wxiaoguang@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tests/integration/editor_test.go

@@ -227,8 +227,7 @@ func testEditorWebGitCommitEmail(t *testing.T) {
 		req.Header.Add("Content-Type", uploadForm.FormDataContentType())
 		resp := session.MakeRequest(t, req, http.StatusOK)
 
-		respMap := map[string]string{}
-		DecodeJSON(t, resp, &respMap)
+		respMap := DecodeJSON(t, resp, map[string]string{})
 		return respMap["uuid"]
 	}