[Form] Add ability to link text

[masperber]

Impacted plugin

Jetpack

What

In the Jetpack Form block, add the ability to link text in various sub-blocks

How

Some sub-blocks to the Jetpack Form lack the ability to add a link to the text in the block. One example of this is the Checkbox. It would be beneficial to have this ability.

One use case is a checkbox to indicate that terms and conditions have been read. It would be beneficial to add a link so that the terms and conditions can be read.