Editor: Show routes on a map causes out of memory issues

[landonreed]

Observed behavior (please include a screenshot if possible)

In the editor, turning on the pattern shapes overlay will cause out of memory issues for very large feeds.

Expected behavior

There is currently no back end solution to prevent this, so this feature ought to be disabled for now.

Steps to reproduce the problem

1. Open the editor for a very large feed
2. In the top left corner of the map check the 'Show routes on map' overlay
3. A massive GraphQL query requests the shape points for every pattern and kills the application

Any special notes on configuration used

N/A

Version of datatools-ui and datatools-server if applicable (exact commit hash or branch name)

latest dev

[binh-dam-ibigroup]

Reopening this issue after merging #628 per #628 (review) by @evansiroky.