Add two lints for cases where enum discriminants are no longer define… #3112

Job	Run time
Semver: core-graphics	55s
Build binary (Windows)	3m 9s
Check lint and rustfmt	13s
Build binary	38s
Run tests (1.81, false)	4m 31s
Check if version changed	16s
Run tests (1.82, false)	4m 6s
Run tests (stable, false)	4m 20s
Run tests (beta, false)	4m 9s
Run tests (nightly, true)	4m 0s
Caching across rustdoc versions	1m 30s
Caching with feature config changed	26s
Semver: bevy_core v0.9.0	28s
Check failure when installed rustc is too old	21s
Semver: bevy_gltf v0.9.1	49s
Semver: clap v3.2.0	52s
Semver: libp2p-dcutr 1.62.0 and libp2p-relay 0.14.0	1m 20s
Semver: libp2p-gossipsub ~0.44.0 + libp2p-request-response ~0.24.0	1m 18s
Semver: libp2p-uds 0.37.0	52s
Semver: dependency has warnings with "-Dwarnings" (libp2p v0.53.1)	1m 13s
Semver: perf-event-open-sys2 v5.0.0	10s
Semver: ref-slice fork (git)	37s
Semver: ref-slice fork (sparse)	15s
Semver: libp2p-core 0.37.0	51s
Semver: sqllogictest v0.13.0	33s
Semver: tokio ~v1.25.0 (explicit)	3s
Semver: tokio ~v1.25.0 (implicit)	4s
Semver: ref-slice fork (Windows) (git)	1m 19s
Semver: ref-slice fork (Windows) (sparse)	1m 17s
All CI stages	1s
Check for semver compliance	0s
Run the release workflow	0s
	40m 36s

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