Regression in [0]. When zoomed in, we can be within the face of an
island but too far from an edge, in this case
uv_find_nearest_face_multi_ex is used instead of
uv_find_nearest_edge_multi with the consequence that hit.l cannot be
used in uvedit_uv_select_test (it is NULL).
Instead, use uvedit_face_select_test instead in this case.
[0]: d356edf420
Reviewed By: campbellbarton
Ref D15100