Transform Block: GB Mobile hash change

[illusaen]

Gutenberg: WordPress/gutenberg#28453

NOTE: No explicit changes to the gutenberg-mobile repo; all changes are in the above linked PR.

Allow users to transform blocks that are:

Not explicity disallowed (from block -> to block, i.e. paragraph to group)
Explicitly allowed to be transformed from/to (i.e. paragraph)
Not unsupported.

NOTE: Mobile supports a subset of the web transformations; i.e. we don't support any that the web doesn't, and we don't support all of the web's transformations. Thus, when following the diagram below, the transformations don't match exactly as the web doesn't support all of the transformations on the diagram.

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered if this change warrants user-facing release notes more info and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

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