Fix flaky e2e test for vote tooltips on replies page

The test was failing intermittently because it expected exact tooltip
text "UpvoteUpvote" / "DownvoteDownvote", but posts after payout show
additional warning text.

Fix: Accept both variants (with and without payout warning), matching
the approach already used in profileBlogPage.spec.ts.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>