Autoinject feedback widget

[antonis]

Enhance the feedback form implementation to support "autoinjection".

Also see #4328 (comment), #4338 (comment) and #4378 (comment)

[lucas-zimerman]

@antonis Since #4370 was implemented, can we close this issue?

[antonis]

Thank you for the ping @lucas-zimerman 🙇
I've left this open to revisit it based on the feedback in #4328 (comment) and #4338 (comment)