Update templates to use new constrained layout setting

[ryelle]

See WordPress/gutenberg#42763 — This new constrained layout type replaces the inherit: true setting in layout, and constrains the inner content to use the given content/wide width (vs no constraint = full screen width).

The new layout setting will be released with GB 14.0, though the old setting will probably be supported still (how long?)

We should update the parent & child templates (wporg-main-2022) to use this new setting.

I think the patterns in wporg-main-2022 would update automatically with the build:patterns script, but worth checking that too.

For example:

- <!-- wp:group {"layout":{"inherit":true}} -->
+ <!-- wp:group {"layout":{"type":"constrained"}} -->

("On Hold" because technically 14.0 is not out yet, but it should be released today)

[ryelle]

There are a bunch of these across wporg-developer-2023, wporg-developer-blog, wporg-documentation-2022, wporg-gutenberg, wporg-main-2022, & wporg-parent-2021, but fewer in the more-recent projects.

Inherit is still supported, and will continue to be. I think we can close this issue, let the updates happen naturally, and only worry about fixing it if it breaks.