Activity Log: show "title" for text widget updates

[simison]

Jetpack Activity log item for text widget updates could include a widget title?

Instead of "Text" this could say "Text: test" just like widgets area at wp-admin does:

There is typically just one of each other widget types at a site but multiple text widgets. Activity log updates about them can get a bit confusing.

/cc @lezama @MichaelArestad

[gititon]

In progress.

[lezama]

Automattic/jetpack#8786

[gititon]

D10043-code
Automattic/jetpack#8786