[CI] Restore ruff-format on test_target_codegen_c_host.py

[LngelKyo]

#20131 left a 3-line wrapped call in test_round (tests/python/codegen/test_target_codegen_c_host.py:200) that ruff-format rejoins into a single line under line-length = 100, so pre-commit run --all-files fails on every open PR — the CI lint is currently red on main, and this PR is the one-line restore.

-        midpoints = np.array(
-            [0.5, 1.5, 2.5, 3.5, -0.5, -1.5, -2.5, -3.5], dtype="float32"
-        )
+        midpoints = np.array([0.5, 1.5, 2.5, 3.5, -0.5, -1.5, -2.5, -3.5], dtype="float32")

Reproduce with the CI-pinned hook:

uvx ruff@0.12.3 format --check tests/python/codegen/test_target_codegen_c_host.py

Formatting-only; no other change. Once merged, #20252 (which rebases on this) goes green.

[LngelKyo]

@tlopex @yongwww — one-line CI unblock; any committer can approve. This is the lint failure currently showing on #20252 and any other open PR.

[tlopex]

Could you close this and fold this into #20252 ?

[LngelKyo]

Closing per @tlopex — folding the one-line restore into #20252.

[LngelKyo]

Reopening: main is currently failing ruff format on this one file (from #20131), which blocks lint on every open PR — including #20249, which is approved with all seven other checks green. One line, verified with the CI-pinned ruff 0.12.3.

[LngelKyo]

Closing per @tlopex — folding back into #20252 (see #20252 (comment)).