HideSplash() earlier before the initial frame->Show()

There are instances we can throw modals very fast on frame show :/

Fixes https://gitlab.com/kicad/code/kicad/-/issues/15168

common/single_top.cpp

@@ -357,6 +357,7 @@ bool PGM_SINGLE_TOP::OnPgmInit()
     // OpenProjectFiles() that can update/use some widgets.
     // The 2 calls to wxSafeYield are needed on wxGTK for best results.
     wxSafeYield();
+    HideSplash();
     frame->Show();
     wxSafeYield();
 
@@ -408,7 +409,5 @@ bool PGM_SINGLE_TOP::OnPgmInit()
         frame->OpenProjectFiles( fileArgs );
     }
 
-    HideSplash();
-
     return true;
 }