Regression from 30735bdb5a (sd theme: add PPTX
import for shape fill color effects, 2022-04-27), the bugdoc's A2 cell
lost its tinting (its background color is no longer lighter than A1)
after saving back to PPTX + import again.
The code assumed that in case a fill color has effects, it can only be
luminance offset or modulation, since that's what the PowerPoint UI
generates when setting a fill color explicitly. This did not take the
table style case into account, which uses tinting to make a color
lighter.
Fix the problem by not importing the theme index / effects if tinting is
used -- the current doc model is limited to theme index + lum mod/off
with effects.
This limitation can be removed while text color / fill color effects are
not limited to lum mod/off, but also support tinting/shading.
Change-Id: I382cc0067518cc262e261a462999170cb7db261b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133908
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
f932b00f3a