[Lens] Data histogram on not primary timefield in lens fails to render correctly for XYChart

[mbondyra]

Kibana version:
7.5.1, 7.6, master

Describe the bug:

Steps to reproduce:

1. Choose the sample data index pattern for ecommerce
2. Create lens visualization with the config as on the screenshot (X-axis has to be data histogram on a field that's not primary timefield)
3. The data won't be displayed.

Expected behavior:
Data should be displayed.

Screenshots (if relevant):

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[mbondyra]

This got solved by #63874. Closing.