[3.13] gh-125761: Clarify repeated warning suppression criteria in warnings module (gh-126330)

(cherry picked from commit 10eeec2d4ffb6b09a6d925877b6d9ef6aa6bb59d)

Co-authored-by: 고병찬 <70642609+byungchanKo99@users.noreply.github.com>