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/workflow/workflow-steps/hooks/__tests__/useUpdateStep.test.ts

@@ -41,9 +41,9 @@ describe('useUpdateStep', () => {
       type: 'CODE' as const,
       settings: {
         input: {
-          serverlessFunctionId: 'id',
-          serverlessFunctionVersion: '1',
-          serverlessFunctionInput: {},
+          logicFunctionId: 'id',
+          logicFunctionVersion: '1',
+          logicFunctionInput: {},
         },
         outputSchema: {},
         errorHandlingOptions: {