[7.3.0] Non-card payment methods noted as incompatible with the Checkout Block

[csmcneill]

Describe the bug

If a site admin edits a page that has the checkout block, there will be a warning that all APMs (even those that are not enabled) are incompatible with the checkout block.

The notice is resolved when reverting to 7.2.0.

To Reproduce

1. Ensure the site is running 7.3.0.
2. Edit a page using the Checkout block.
3. Attempt to modify one of the blocks.
4. See a "Some active extensions do not yet support this block" notice in the block settings.
5. Revert to 7.2.0.
6. Repeat steps 2 and 3.
7. The notice from step 4 is no longer visible.

Actual behavior

The checkout block suggests that it is incompatible with non-card payment methods, which is not true AFAICT.

Screenshots

Expected behavior

This notice should only appear if these payment methods are incompatible.

Additional context

From what I can tell, APMs and BNPLs may be considered individual payment gateways/extensions in 7.3.0. When spinning up a new site, I get spammed with emails about multiple payment gateways being activated — one for each APM/BNPL method available:

[FangedParakeet]

Hey team! Please add your planning poker estimate with Zenhub @FangedParakeet @timur27