v8.0.0-rc.8-dev.5: TML-2624: renew the contract package coverage waiver (#30155)

发生了什么

Renews the expired coverage waiver for packages/1-framework/0-foundation/contract . The 90-day waiver added 2026-05-29 lapsed on 2026-08-27, which flipped the Test job's coverage gate red on every open PR (first observed on #30154 , a PR that doesn't touch the package). The underlying situation is unchanged — 93.75% branches vs the 94% floor, the same 15 uncovered branches as when the waiver was written — so this re…

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