fix: Ignare lint warnings in capnproto generated code (#1728) #2751

Job	Run time
Check for changes	4s
Build benchmarks 🏋️	2m 37s
tests (Rust 1.75)	2m 33s
check	1m 45s
tests (Rust nightly, coverage)	4m 36s
tests (Rust beta)	2m 10s
tests (Rust stable, all features)	2m 52s
tests hugr-llvm (14.0, 14-0)	2m 0s
tests (Rust stable, no features)	2m 1s
Check standard extensions	4s
Required checks 🦀	1s
	20m 43s

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