Add "Request expiration" as triggering event option to notice policy

As a librarian
I want to send a note to a patron based on request expiration
So that the patron is aware

Requirements

• Under Request notices accordion > Add a new triggering event option called Request expiration
• Request expiration should be the last option in the dropdown
• When user selects the Request expiration option then show the Send dropdown with the following options: Upon/At and Before
• Display Frequency dropdown when user selects Before in the Send dropdown.

Screenshot

Acceptance Criteria

Given the FOLIO operator creates or edits patron notice policy (Settings > Circulation > Patron notice policy)
When s/he opens the Triggering event select in the Request notices accordion
Then Request expiration should be an option

Given the FOLIO operator selects the Triggering event = Request expiration
When the Send dropdown displays
Then show the following options : Upon/At and Before
AND Frequency dropdown should not display

If the user clicks Upon/At under the Send dropdown
Then do not show Frequency dropdown

If the user clicks Before under the Send dropdown
Then do show Frequency dropdown