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Add test for Future inflating arg size to 3x This adds one more test that should track improvements to generator layout, like https://github.com/rust-lang/rust/issues/62958 and https://github.com/rust-lang/rust/issues/62575. In particular, this test highlights suboptimal layout, as the storage for the argument future is not being reused across its usage as `upvar`, `local` and `awaitee` (being polled to completion). This is on top of https://github.com/rust-lang/rust/pull/107692 (as those would conflict with each other) It is a minimal repro for code mentioned in https://github.com/moka-rs/moka/issues/212#issuecomment-1416914616 (CC `@tatsuya6502)`