BUG #14402: Fixed Mac issue by using pqFileDialog.

Addresses bug by using pqFileDialog instead of QFileDialog.

Change-Id: Ifc40be10399a44183d23ec4bd3782d03828f5752
Merge topic '14402_fix_save_macro' into next

1e1b6e6 BUG #14402: Fixed Mac issue by using pqFileDialog.