tdf#137779 Add info about Jumbo sheets status into About dialog

Since Jumbo sheets is an experimental feature, user enabling it
might get problems. It will be good to specify Jumbo sheets status
(if enabled) in the About Dialog.

Change-Id: I1238d15ea8e32a418754b4323ba9771b63337301
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110800
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <heiko.tietze@documentfoundation.org>
diff --git a/cui/source/dialogs/about.cxx b/cui/source/dialogs/about.cxx
index d4e3d80..12d1927 100644
--- a/cui/source/dialogs/about.cxx
+++ b/cui/source/dialogs/about.cxx
@@ -237,6 +237,12 @@ OUString AboutDialog::GetMiscString() {
    aCalcMode += "threaded";
  }

  if (officecfg::Office::Calc::Defaults::Sheet::JumboSheets::get())
  {
    if (!aCalcMode.endsWith(" "))
      aCalcMode += " ";
    aCalcMode += "Jumbo";
  }
  sMisc += aCalcMode;

  return sMisc;