Merge topic 'block-var-scope' into release-3.25

96ddcbee60 cmState: Clarify name of member tracking the active scope in a directory
cb53d9309e block: Fix variable scope protection from modification by subdirectories

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !7885