Feature Request

• Yes, I reviewed the contribution guidelines.

Describe your use case and the problem you are facing

When you set some block styles in block.json and use the wp i18n make-pot command, the generated .pot file doesn't contains the label strings.

Example:

"styles": [
	{
		"name": "default",
		"label": "Default",
		"isDefault": true
	},
	{
		"name": "subscription",
		"label": "Subscription"
	}
],

Default and Subscription are missing from the .pot file.

Describe the solution you'd like

These strings should be part of the .pot file.