[Bug] Revert E2E Script Must Drain Royalties Before Empty-Claim Test

[realproject7]

Summary

During execution of #29 after the split-script refactor, T3 found that the revert script still has a D2 setup bug: the empty-claim revert test needs to drain pending royalties first, otherwise it may not actually be testing the intended empty-claim path.

Problem

The revert script currently reaches the D2 empty-claim test with royalties still available, so the test setup does not faithfully represent the double-claim / nothing-left-to-claim scenario.

Scope

Update the revert validation script so it drains pending royalties before asserting the empty-claim revert path for D2.

Acceptance Criteria

• D2 first drains/claims pending royalties in the correct actor context
• The follow-up empty-claim call tests the true NothingToClaim path
• Issue [Test] Run E2E Mainnet Test Suite #29 can be re-run without D2 setup ambiguity in the revert script
• PR includes the correct original issue number in the title

Notes

• This bug was discovered by T3 during the live execution of [Test] Run E2E Mainnet Test Suite #29 after PR [#36] Split E2E into broadcast + revert scripts #37 merged
• Keep the D2 semantics aligned with the intended real double-claim behavior