Zac West 81fc1144fc Fix watch notifications not handling multi-line (#1613) ...

Fixes #1612.

## Summary
Sets the number of lines to 0, and to make the group prettier also hides the labels when empty.

## Screenshots
![Simulator Screen Shot - Apple Watch Series 6 - 40mm - 2021-05-01 17 48 37](https://user-images.githubusercontent.com/74188/116798602-2a8b5700-aaa6-11eb-884f-d8a4b29accad.png)

2021-05-01 18:43:31 -07:00

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Date+ComplicationDivination.swift

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WKInterfaceDevice+Size.swift

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WKInterfaceLabel+Additions.swift

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