tdf#155308: explicitly keep the focus by default for non gtk renderings

Change-Id: I95acbbba1c5322f0b965108d092386ccc6932a4b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/184938
Reviewed-by: Julien Nabet <[email protected]>
Tested-by: Jenkins
(cherry picked from commit 23d1548)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/184981
Reviewed-by: Caolán McNamara <[email protected]>

Author: serval2412

cui/source/dialogs/cuifmsearch.cxx

@@ -296,6 +296,8 @@ IMPL_LINK_NOARG(FmSearchDialog, OnClickedSearchAgain, weld::Button&, void)
             else
                 m_pSearchEngine->SearchNextSpecial(m_prbSearchForNull->get_active());
         }
+        // tdf#155308: explicitly keep the focus by default for non gtk renderings
+        m_pbSearchAgain->grab_focus();
     }
     else
     {   // the button has the function 'cancel'