fix: Fix the critical issues of btu and bt_common from AI review report

- advance connect queue on synchronous connect_cb failure
- lock bta_alarm_hash_map in all BTA timer APIs
- free controller params after stack disable; cleanup on init fail
- handle BTE_InitStack failure and signal init future
- validate HCI remote name event length before parse
- drop stale L2CAP quick-timer alarm events

components/bt/host/bluedroid/stack/btu/btu_init.c

@@ -148,10 +148,10 @@ void btu_free_core(void)
 **                  NOTE: Must be called before creating any tasks
 **                      (RPC, BTU, HCIT, APPL, etc.)
 **
-** Returns          void
+** Returns          true for success, otherwise false
 **
 ******************************************************************************/
-void BTU_StartUp(void)
+bool BTU_StartUp(void)
 {
 #if BTU_DYNAMIC_MEMORY
     btu_cb_ptr = (tBTU_CB *)osi_malloc(sizeof(tBTU_CB));
@@ -194,11 +194,12 @@ void BTU_StartUp(void)
         goto error_exit;
     }
 
-    return;
+    return true;
 
 error_exit:;
     LOG_ERROR("%s Unable to allocate resources for bt_workqueue", __func__);
     BTU_ShutDown();
+    return false;
 }
 
 /*****************************************************************************