Rename serverlessFunction to logicFunction (#17494)

## Summary

Rename "Serverless Function" to "Logic Function" across the codebase for
clearer naming.

### Environment Variable Changes

| Old | New |
|-----|-----|
| `SERVERLESS_TYPE` | `LOGIC_FUNCTION_TYPE` |
| `SERVERLESS_LAMBDA_REGION` | `LOGIC_FUNCTION_LAMBDA_REGION` |
| `SERVERLESS_LAMBDA_ROLE` | `LOGIC_FUNCTION_LAMBDA_ROLE` |
| `SERVERLESS_LAMBDA_SUBHOSTING_URL` |
`LOGIC_FUNCTION_LAMBDA_SUBHOSTING_URL` |
| `SERVERLESS_LAMBDA_ACCESS_KEY_ID` |
`LOGIC_FUNCTION_LAMBDA_ACCESS_KEY_ID` |
| `SERVERLESS_LAMBDA_SECRET_ACCESS_KEY` |
`LOGIC_FUNCTION_LAMBDA_SECRET_ACCESS_KEY` |

### Breaking Changes

- Environment variables must be updated in production deployments
- Database migration renames `serverlessFunction` → `logicFunction`
tables

packages/twenty-front/src/modules/logic-functions/utils/flattenSources.ts

@@ -0,0 +1,28 @@
+// IA Generated
+import { type Sources } from 'twenty-shared/types';
+
+type FlatSource = { path: string; content: string };
+
+export const flattenSources = (
+  sources: Sources,
+  basePath = '',
+): FlatSource[] => {
+  const out: FlatSource[] = [];
+
+  const join = (a: string, b: string) => (a ? `${a}/${b}` : b);
+
+  const walk = (node: Sources, prefix: string) => {
+    for (const [name, value] of Object.entries(node)) {
+      if (typeof value === 'string') {
+        out.push({ path: join(prefix, name), content: value });
+      } else if (value && typeof value === 'object') {
+        walk(value as Sources, join(prefix, name));
+      }
+    }
+  };
+
+  walk(sources, basePath);
+
+  out.sort((a, b) => (a.path < b.path ? -1 : a.path > b.path ? 1 : 0));
+  return out;
+};