Merge v6.1.2 - Githubissues

6.1.2 - December 7 2023

Remove custom block patterns feature (this is now supported by core WordPress).
Move synced pattern to Appearance > Synced Patterns to clean up the sidebar.
Fix delegated animations issue that caused them to apply even with no animation options chosen.
Prefix wp cli files to make them easier to identify as cli scripts.
Fix Grid block preventing anything but paragraph blocks being entered.
Fix bug with block template's inner block's use of useInnerBlockProps.