Merge tag 'kconfig-2025-changes_2025-09-05' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.18-merge

xfs: kconfig and feature changes for 2025 LTS [6.18 v2 2/2]

Ahead of the 2025 LTS kernel, disable by default the two features that
we promised to turn off in September 2025: V4 filesystems, and the
long-broken ASCII case insensitive directories.

Since online fsck has not had any major issues in the 16 months since it
was merged upstream, let's also turn that on by default.

With a bit of luck, this should all go splendidly.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>