[twenty-server] no-misused-promise lint (#20529)

# Introduction
Adding `no-miused-promise` lint rule to the twenty-server
In order to flag such pattern
```ts
// ❌ Flagged — forEach doesn't await the callback
items.forEach(async (item) => {
  await process(item);
});
```

## What happened
- Refactored the code-interpreter driver to have a async onResult (
which is also expected by e2b )
- Workspace manager still dirty solution including force cast
- Basic fixes

packages/twenty-server/src/engine/subscriptions/utils/wrap-async-iterator-with-lifecycle.ts

@@ -17,9 +17,9 @@ export function wrapAsyncIteratorWithLifecycle<T>(
 
   const startHeartbeat = () => {
     if (onHeartbeat && heartbeatIntervalMs) {
-      heartbeatInterval = setInterval(async () => {
+      heartbeatInterval = setInterval(() => {
         try {
-          await onHeartbeat();
+          void onHeartbeat().catch(() => {});
         } catch {
           // Heartbeat failure shouldn't crash the stream
         }