Don't reuse tooltip window in different context

This causes interference to other views due to usage
of global references in Online.

Change-Id: Ib9346881d4e48ac1ce3456d386806582ade82255
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103994
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Szymon Kłos <szymon.klos@collabora.com>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105593
Tested-by: Jenkins
diff --git a/vcl/source/app/help.cxx b/vcl/source/app/help.cxx
index 7f16b6a..4785b47 100644
--- a/vcl/source/app/help.cxx
+++ b/vcl/source/app/help.cxx
@@ -498,21 +498,10 @@ void ImplShowHelpWindow( vcl::Window* pParent, sal_uInt16 nHelpWinStyle, QuickHe
    {
        SAL_WARN_IF( pHelpWin == pParent, "vcl", "HelpInHelp ?!" );

        if  (   (   rHelpText.isEmpty()
                ||  ( pHelpWin->GetWinStyle() != nHelpWinStyle )
                )
            &&  aHelpData.mbRequestingHelp
            )
        {
            // remove help window if no HelpText or
            // other help mode. but keep it if we are scrolling, ie not requesting help
            bool bWasVisible = pHelpWin->IsVisible();
            if ( bWasVisible )
                bNoDelay = true; // display it quickly if we were already in quick help mode
            pHelpWin = nullptr;
            ImplDestroyHelpWindow( bWasVisible );
        }
        else
        bool bRemoveHelp = (rHelpText.isEmpty() || (pHelpWin->GetWinStyle() != nHelpWinStyle))
                            && aHelpData.mbRequestingHelp;

        if (!bRemoveHelp && pHelpWin->GetParent() == pParent)
        {
            bool const bUpdate = (pHelpWin->GetHelpText() != rHelpText) ||
                ((pHelpWin->GetHelpArea() != rHelpArea) && aHelpData.mbRequestingHelp);
@@ -525,6 +514,16 @@ void ImplShowHelpWindow( vcl::Window* pParent, sal_uInt16 nHelpWinStyle, QuickHe
                    pHelpWin->Invalidate();
            }
        }
        else
        {
            // remove help window if no HelpText or
            // other help mode. but keep it if we are scrolling, ie not requesting help
            bool bWasVisible = pHelpWin->IsVisible();
            if ( bWasVisible )
                bNoDelay = true; // display it quickly if we were already in quick help mode
            pHelpWin = nullptr;
            ImplDestroyHelpWindow( bWasVisible );
        }
    }

    if (pHelpWin || rHelpText.isEmpty())