Communities join screens (Non token gated) - Add Manual request Denied flow

[J-Son89]

** This Feature needs to be discussed whether it's needed before beginning.** - It opens a large spam vector so we want to minimise the potential risk.

Do some research/ discussion whether this is needed or not. Then implement if so.

See the steps for this flow in: https://www.figma.com/file/h9wo4GipgZURbqqr1vShFN/Communities-for-Mobile?node-id=7035%3A462899&t=4pBzp6AcBrgJRPmM-0

and ensure all screens of the flow are considered.

Add the notification to the user that their request has been denied -
https://www.figma.com/file/h9wo4GipgZURbqqr1vShFN/Communities-for-Mobile?node-id=1414%3A114283&t=4pBzp6AcBrgJRPmM-0

Check that bottom sheet option menu items are correct to the designs -
https://www.figma.com/file/apCsJHT8J58JXbJD2igtbd/Context-Drawers-for-Mobile?node-id=171%3A182069&t=cC9sSYMuC3Njs4nB-0