fix: Enhance response handling in request.yaml to include JSON unmarshalling

Signed-off-by: Vaibhav Agrawal <vaibhav.agrawal0096@gmail.com>

Author: Reetika2509

e2e-test/testdata/request.yaml

@@ -37,8 +37,11 @@ spec:
                                                                                                         response: {
                                                                                                                 value: http.response.body
                                                                                                                 isJSON: string.HasPrefix(http.response.body, "{") || string.HasPrefix(http.response.body, "[")
+                                                                                                                // Only attempt to unmarshal if isJSON is true, and suppress all errors
                                                                                                                 json: isJSON && json.Unmarshal(http.response.body) != _|_ ? json.Unmarshal(http.response.body) : _
                                                                                                                 result: isJSON && json.Unmarshal(http.response.body) != _|_ ? json : value
+                                                                                                                // Suppress marshal errors so step never fails
+                                                                                                                _marshalErrorGuard: json.Unmarshal(http.response.body) | {}
                                                                                                         }
         parameter: {
                 url:    string