Check if implicit list-item counter has explicit value in update counters
Fixed: 347197910
Change-Id: Idda430195313dc35a4995769653c62854603788a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5630683
Reviewed-by: Rune Lillesveen futhark@chromium.org
Commit-Queue: Daniil Sakhapov sakhapov@chromium.org
Cr-Commit-Position: refs/heads/main@{#1315888}