[messaging-app] compose message: user does not know that a number/contact was added as recipient

[Olga Kemmet]

Steps to reproduce:

1. Open messaging app
2. Swipe from the bottom of the main view to compose a new message
3. Start typing in a number manually
4. After finishing typing the number, try to add a 2nd number manually or a contact -> it won't work

Issue: the app does not know that the number (input) is finished and doesn't recognise it as a recipient until you tap into the message input field. There is no way to add a 2nd or third recipient straight after.

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Desired solution:

A comma at the end of an entry can signal to the app that the number/contacts input is finished. This way there won't be a need to tap between the contacts and message input fields to get a number/contact recognised.