Eeschema: save worksheet filename in project file.

The call to saveProjectSettings() was missing.
Fixes #14219
https://gitlab.com/kicad/code/kicad/issues/14219

eeschema/files-io.cpp

@@ -1112,8 +1112,7 @@ bool SCH_EDIT_FRAME::SaveProject( bool aSaveAs )
     }
     else
     {
-        RecordERCExclusions();  // ensure ERC Exclusions list is up to date
-        GetSettingsManager()->SaveProject();
+        saveProjectSettings();
     }
 
     if( !Kiface().IsSingle() )