Not enforcing someday limit when user clicks migrate arrow

[tyler-dane]

Prerequisites

• Using an up-to-date main branch

Expected Behavior

1. User is viewing a week with less than 9 someday events
2. User migrates a someday event forward
3. The next week already has 9 someday events
4. The warning alert is shown and the event is not migrated

Current Behavior

1-3: same
4. The event is migrated
5. When going to the next week, all 10 events are rendered

Possible Solution (Not obligatory)

During regular migrations, we use the isAtMonthlyLimit and isAtWeeklyLimit selectors before allowing a migration. Consider creating a new selector called something like canMigrate or isMigrateForwardAllwed, which accepts an argument of "forward" or "backward." It then uses the current viewStart and viewEnd (from redux) and determines whether the operation is acceptable by seeing if the user has less than the limit on the next/previous view.

Context

This bug results in bad UX for users. If they have lots of someday events in the same week, they won't all render properly