head: reset stale partial line state on reused buffers #11407

Performance Gate Passed

✅ 298 untouched benchmarks
⏩ 48 skipped benchmarks¹

_{Comparing can1357:head-reset-stale-partial-line-state-on-reused-buffers (6390cd8) with main (209bb97)}

48 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩