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-sdk/src/cli/commands/app-command.ts

@@ -161,7 +161,7 @@ export const registerCommands = (program: Command): void => {
       '-n, --functionName <functionName>',
       'Name of the function to execute',
     )
-    .description('Execute a serverless function with a JSON payload')
+    .description('Execute a logic function with a JSON payload')
     .action(
       async (
         appPath?: string,