Add indexed-access-with-default in fill_test.cljc to cover the two-arity
(nth fills i default) form on both valid and out-of-range indices, directly
exercising the CLJS Fills -nth path fixed in 593cf125.
Add segment-content->selrect-multi-line in path_data_test.cljc to cover
content->selrect on a subpath with multiple consecutive line-to commands
where move-p diverges from from-p, confirming the bounding box matches
both the expected coordinates and the reference implementation; this
guards the calculate-extremities fix in bb5a04c7.
Add types-uniform-spread? in colors_test.cljc to cover
app.common.types.color/uniform-spread?, which had no dedicated tests.
Exercises the uniform case (via uniform-spread), the two-stop edge case,
wrong-offset detection, and wrong-color detection.
Signed-off-by: Andrey Antukh <niwi@niwi.nz>
db7c646568