Split OptionsFieldUiTest into two

Tried removing the data provider but there's a lot of field/entity state to keep track of if we do that.

So trying the brute force approach of splitting this into two classes - one for the data provider test, one for the other test methods.

Seems straightforward

I changed the class doc for the new test file to show what it is doing. Leaving at RTBC.

Observed test failures, found there are some Nightwatch test case failures unrelated to changes in MR & run pipeline

pipeline passed & MR is mergeable now, keeping it to prev RTBC state.

nod_ → closed merge request !8935

Committed and pushed a2713312d2 to 11.x and a73cec5df8 to 11.0.x and cbea2bb9af to 10.4.x and b2fc85cf0b to 10.3.x. Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.