Fixed some AudioProcessor layouts mis-matches in the JUCE plugin examples

examples/Plugins/AUv3SynthPluginDemo.h

@@ -323,7 +323,7 @@ public:
     //==============================================================================
     bool isBusesLayoutSupported (const BusesLayout& layouts) const override
     {
-        return (layouts.getMainOutputChannels() == 2);
+        return (layouts.getMainOutputChannels() <= 2);
     }
 
     void prepareToPlay (double sampleRate, int estimatedMaxSizeOfBuffer) override

examples/Plugins/InterAppAudioEffectPluginDemo.h

@@ -175,7 +175,7 @@ public:
 
     bool isBusesLayoutSupported (const BusesLayout& layouts) const override
     {
-        if (layouts.getMainInputChannelSet() != AudioChannelSet::stereo())
+        if (layouts.getMainInputChannels() > 2)
             return false;
 
         if (layouts.getMainOutputChannelSet() != layouts.getMainInputChannelSet())