Fix internal jack client for new main-thread-idle behaviour

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/engine/CarlaEngine.cpp

@@ -445,6 +445,7 @@ void CarlaEngine::idle() noexcept
     CARLA_SAFE_ASSERT_RETURN(getType() != kEngineTypePlugin,);
 
     const bool engineNotRunning = !isRunning();
+    const bool engineHasIdleOnMainThread = hasIdleOnMainThread();
 
     for (uint i=0; i < pData->curPluginCount; ++i)
     {
@@ -469,7 +470,7 @@ void CarlaEngine::idle() noexcept
                 }
                 else
                 {
-                    if (hints & PLUGIN_NEEDS_MAIN_THREAD_IDLE)
+                    if (engineHasIdleOnMainThread && (hints & PLUGIN_NEEDS_MAIN_THREAD_IDLE) != 0)
                     {
                         try {
                             plugin->idle();

source/backend/engine/CarlaEngineJack.cpp

@@ -1731,7 +1731,11 @@ public:
 
     bool hasIdleOnMainThread() const noexcept override
     {
+       #ifndef BUILD_BRIDGE
+        return !fIsInternalClient;
+       #else
         return true;
+       #endif
     }
 
     bool isRunning() const noexcept override