App crashes when logging in after zooming in

[rajadain]

Overview

If the vector tile layer is turned on, and you zoom in all the way and pick a facility, then click "Log In" in the top right, the app crashes.

Unhandled Rejection (TypeError): layer is undefined
https://github.com/open-apparel-registry/open-apparel-registry/blob/8b262ae7619b40045c1e720d23d8e93aa52f3941/src/app/src/components/VectorTileFacilityGridLayer.jsx#L97

Expected Behavior

The app does not crash, and allows logging in.

Actual Behavior

The app crashes.

Steps to Reproduce

• Have the vector tile layer turned on
• Zoom all the way in to the facility level and select one
• Click "Log In" in the top right
• Wait a few seconds
• See the app crash

Demo

[kellyi]

This should be pretty straightforward to fix and we'll need to do that before releasing vector tiles to production.