* fix: probably copy-pasted function description
* fix: userIdsMentioned was always empty
* add: NotificationEventType.ResolveComment
* move: split handler for "mentioned" vs. "resolved"
The recipients for "resolved" will include more people (creator, repliers, mentioned), so it's easier to just split the handler than trying to augment it.
* implement: handleResolvedComment
* clone: CommentMentionedEmail as CommentResolvedEmail
Changes coming up in next commit...
* implement: CommentResolvedEmail
* Fix "New Comment↓" incorrectly showing in Resolved
## Repro 1 (with production code)
1. In a list of long resolved comments, scroll up and select the first one.
2. From another account, resolve another comment. The hint appears.
## Repro 2 (with production code)
1. Select Most-Recent, then Resolved.
2. F5. It's scrolled all the way to the bottom.
## Repro 3 (after this PR)
1. Click on the notification when someone resolved a comment. The screen jumps to "Resolved" + showing hint unnecessarily.
## Fix
The scrolling and hint was meant for Most Recent only, but missed out this case since "Resolve" is not part of the enum.
* Better sentences
* Refactor "mentions + author" calculation
* Remove unnecessary check
The resolver is already added to `userIdsNotified` from the start, so no point checking it again here.
Hemachandar