Improve handling of users reporting their own requests for admin atttention

[RichardTaylor]

Users sometimes report their own requests for admin attention.

The reasons on the form could be amended to better suit a user reporting their own request, currently the classifications, and wording are intended for reports raised by anyone.

The reasons could start "I..."

"I accidentally sent personal correspondence" "I have received an error message"

There's quite some overlap with the classification form and the "I've received an error message" option there which prompts a: "Please tell us more" form. Perhaps we could add a general "I need help from the admin team in relation to this request" option on the classification form, which might stop users reporting their own requests instead.

Related: Improve automated advice for users asked for to provide their names #5376