Merge topic 'cxxmodules-flagtable-fixes' into release-3.28

50f3c58083 FlagTables: Add entries for cl -scanDependencies flag
a22e9e7cf0 FlagTables: `-ifcOutput` takes a subsequent argument

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8892