Serverless function follow up (#9924)

- remove asynchronous serverless function build
- build serverless function synchronously instead on activate workflow
or execute
- add a loader on workflow code step test tab test button
- add a new `ServerlessFunctionSyncStatus` `BUILDING`
- add a new route to build a serverless function draft version 
- delay artificially execution to avoid UI flashing



https://github.com/user-attachments/assets/8d958d9a-ef41-4261-999e-6ea374191e33

packages/twenty-front/src/modules/settings/serverless-functions/graphql/mutations/buildDraftServerlessFunction.ts

@@ -0,0 +1,13 @@
+import { gql } from '@apollo/client';
+import { SERVERLESS_FUNCTION_FRAGMENT } from '@/settings/serverless-functions/graphql/fragments/serverlessFunctionFragment';
+
+export const BUILD_DRAFT_SERVERLESS_FUNCTION = gql`
+  ${SERVERLESS_FUNCTION_FRAGMENT}
+  mutation BuildDraftServerlessFunction(
+    $input: BuildDraftServerlessFunctionInput!
+  ) {
+    buildDraftServerlessFunction(input: $input) {
+      ...ServerlessFunctionFields
+    }
+  }
+`;