Summary context menu cleanup and fixes (#9165)

* Make summary plot ctx menu items show up for the plot you right-click on, not the one selected in the project tree.

ApplicationLibCode/Commands/ApplicationCommands/RicShowPlotDataFeature.h

@@ -21,8 +21,10 @@
 #include "cafCmdFeature.h"
 
 #include <functional>
+#include <vector>
 
 class RiuTabbedTextProvider;
+class RimPlot;
 
 //==================================================================================================
 ///
@@ -36,6 +38,9 @@ protected:
     void onActionTriggered( bool isChecked ) override;
     void setupActionLook( QAction* actionToSetup ) override;
 
+private:
+    void getSelection( std::vector<RimPlot*>& selection );
+
 public:
     static void showTabbedTextWindow( RiuTabbedTextProvider* textProvider );
     static void showTextWindow( const QString& title, const QString& text );