Fix Plotly.react/Angular missing categories + axis tick labels#5345

Merged

wbrgss merged 2 commits intomasterfrom fix-5318-missing-axes-tick-labels

Dec 15, 2020

+73-13

Commits on Dec 14, 2020

Only run emptyCategories loop when restyle or relayout calc flag is true
wbrgss
committed

Commits on Dec 15, 2020

Add test for categories/axes label preservation on Plotly.react(gd, ...)
wbrgss
committed