Rehash sheetpaths when changing sheet uuids.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/19583

eeschema/sch_edit_frame.cpp

@@ -915,6 +915,9 @@ void SCH_EDIT_FRAME::CreateScreens()
     m_schematic->RootScreen()->SetPageNumber( wxT( "1" ) );
     rootSheetPath.SetPageNumber( wxT( "1" ) );
 
+    // Rehash sheetpaths in heirarchy since we changed the uuid.
+    m_schematic->RefreshHierarchy();
+
     if( GetScreen() == nullptr )
     {
         SCH_SCREEN* screen = new SCH_SCREEN( m_schematic );

eeschema/tools/sch_editor_control.cpp

@@ -2821,6 +2821,9 @@ int SCH_EDITOR_CONTROL::RepairSchematic( const TOOL_EVENT& aEvent )
     {
         errors += duplicates;
         details += wxString::Format( _( "%d duplicate IDs replaced.\n" ), duplicates );
+
+        // Rehash sheetpaths as we may have changed their uuids.
+        m_frame->Schematic().RefreshHierarchy();
     }
 
     if( errors )