Fix xaxis alignment for ggkm

[Melkiades]

#1428

[github-actions]

Unit Tests Summary

    1 files     85 suites   1m 34s ⏱️
  900 tests   882 ✅   9 💤 0 ❌ 9 🔥
2 222 runs  1 512 ✅ 701 💤 0 ❌ 9 🔥

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Results for commit 4ce0fc4.

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[github-actions]

Unit Test Performance Difference

Test Suite	$Status$	Time on main	$±Time$	$±Tests$	$±Skipped$	$±Failures$	$±Errors$
g_km	💚	$6.40$	$-4.65$	$-7$	$-8$	$0$	$+9$

Additional test case details

Test Suite	$Status$	Time on main	$±Time$	Test Case
utils_ggplot	👶		$+0.12$	df2gg_works_with_proper_x_axis_and_without

Results for commit 1f71894

♻️ This comment has been updated with latest results.