fix(memory): await reader.cancel() and use non-blocking Bun.gc

apps/sim/executor/execution/block-executor.ts

@@ -672,7 +672,7 @@ export class BlockExecutor {
       logger.error('Error reading executor stream for block', { blockId, error })
     } finally {
       try {
-        reader.cancel().catch(() => {})
+        await reader.cancel().catch(() => {})
       } catch {}
     }
 

apps/sim/lib/monitoring/memory-telemetry.ts

@@ -30,7 +30,7 @@ export function startMemoryTelemetry(intervalMs = 60_000) {
       | { gc?: (force: boolean) => void }
       | undefined
     if (typeof bunGlobal?.gc === 'function') {
-      bunGlobal.gc(true)
+      bunGlobal.gc(false)
     }
 
     const mem = process.memoryUsage()