tdf#158221 sw: fix performance disaster in SwInsertBookmarkDlg

Moving the shell cursor without Start/EndAction results in formatting
and repainting for every bookmark :(

(regression from commit aa6ec3f796)

Change-Id: I2eb77a7a6aa48a1f218957245d75399bddb594ff
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/180965
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

sw/source/ui/misc/bookmark.cxx

@@ -348,6 +348,7 @@ void SwInsertBookmarkDlg::PopulateTable()
     m_aTableBookmarks.clear();
     m_xBookmarksBox->clear();
 
+    m_rSh.StartAllAction();
     IDocumentMarkAccess* const pMarkAccess = m_rSh.getIDocumentMarkAccess();
     for (auto ppBookmark = pMarkAccess->getBookmarksBegin();
          ppBookmark != pMarkAccess->getBookmarksEnd(); ++ppBookmark)
@@ -358,6 +359,7 @@ void SwInsertBookmarkDlg::PopulateTable()
             m_aTableBookmarks.emplace_back(*ppBookmark, (*ppBookmark)->GetName());
         }
     }
+    m_rSh.EndAllAction();
     m_nLastBookmarksCount = pMarkAccess->getBookmarksCount();
 }