Accordion Content, Accordion Panel: blockGap support doesn't work

[t-hamano]

Description

The Accordion Content and Accordion Panel blocks have the spacing.blockGap field defined, but it doesn't work because the layout field is not defined.

Step-by-step reproduction instructions

• Inset an Accordion block.
• Click the Accordion Content or Accordion Panel block.
• Change the Block Spacing setting.
• The gap style doesn't work.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure