8726 workflow add a test button in workflow code step (#9016)

- add test button to workflow code step
- add test tab to workflow code step


https://github.com/user-attachments/assets/e180a827-7321-49a2-8026-88490c557da2



![image](https://github.com/user-attachments/assets/cacbd756-de3f-4141-a84c-8e1853f6556b)

![image](https://github.com/user-attachments/assets/ee170d81-8a22-4178-bd6d-11a0e8c73365)

packages/twenty-front/src/modules/serverless-functions/utils/getFunctionInputFromSourceCode.ts

@@ -0,0 +1,23 @@
+import { getDefaultFunctionInputFromInputSchema } from '@/serverless-functions/utils/getDefaultFunctionInputFromInputSchema';
+import { getFunctionInputSchema } from '@/serverless-functions/utils/getFunctionInputSchema';
+import { FunctionInput } from '@/workflow/types/FunctionInput';
+import { isObject } from '@sniptt/guards';
+import { isDefined } from 'twenty-ui';
+
+export const getFunctionInputFromSourceCode = (
+  sourceCode?: string,
+): FunctionInput => {
+  if (!isDefined(sourceCode)) {
+    throw new Error('Source code is not defined');
+  }
+
+  const functionInputSchema = getFunctionInputSchema(sourceCode);
+
+  const result = getDefaultFunctionInputFromInputSchema(functionInputSchema)[0];
+
+  if (!isObject(result)) {
+    return {};
+  }
+
+  return result;
+};