tdf#131942 no progress bar when saving in calc

regression from
    commit a7de363cead5cd0021d2e3df4573d4cbe27df23b
    remove unnecessary Window::Update() calls, which immediately follow Invalidate

Change-Id: I2525acc9da786c0908bde5f8553258382f7cd45c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/96261
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
(cherry picked from commit fc617677dedc2ee6f52149bac71195420bc351f3)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/96288
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
diff --git a/vcl/source/control/prgsbar.cxx b/vcl/source/control/prgsbar.cxx
index a99c84a..7082042 100644
--- a/vcl/source/control/prgsbar.cxx
+++ b/vcl/source/control/prgsbar.cxx
@@ -169,6 +169,7 @@
        if ( IsReallyVisible() )
        {
            Invalidate();
            PaintImmediately();
        }
    }
    else if ( mnPercent != nNewPercent )