Three locations were changed:
1. a group update, which lists a set of contacts
2. the contact name in the left pane
3. the conversation title
Three new components were added to window.Signal.Components to support
these scenarios, respectively:
1. Emojify
2. ContactName
3. ConversationTitle
Note that there are a number of other places in the app that should be
emojified, but never have been before. Essentially any place that a
contact name might be shown. A non-exhaustive list:
- Show group members
- Show safety number
- Verified change notification
- Disappearing timer change notification
- Contact verification notification
- Quote contact name
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