Description

With the INSERT_BLOCKS action, there is currently no way to tell the difference between a number of arbitrary blocks being inserted versus a defined block pattern being inserted.

Providing the pattern namespace/name within the insertBlocks action creator means that we can determine whether or not these blocks were inserted via a block pattern.

The value of patternName is the block pattern namespace and name if inserted via a pattern, and boolean false if not.

This is information that could be useful for showing the pattern in the undo history, or for plugins to take advantage of.

How has this been tested?

Tested locally, all automated tests passing.

Types of changes

New feature (non-breaking change which adds functionality)

To Test

• Insert a block pattern
• Confirm that the INSERT_BLOCK action has passed the pattern name in the object
• Insert a block, and confirm that the pattern name is false

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.