Short circuit Index.equal if compared Index isn't same type #18067
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Description
closes #8689
Before, comparing two different Index subclasses would execute a GPU kernel when we know they wouldn't be equal (e.g. DatetimeIndex equals RangeIndex). This PR add a short circuit clause to check that we are comparing the same subclasses.
Also ensures we don't return a
np.bool_
object from this result.Checklist