Support non-Vec data structures in relations #56290

Job	Run time
build (windows-latest)	4m 13s
build (ubuntu-latest)	4m 27s
ci	33s
build (macos-latest)	4m 12s
check-bevy-internal-imports	5s
check-doc	10m 11s
check-missing-examples-in-docs	29s
miri	48s
run-examples-macos-metal	6m 28s
toml	1m 59s
typos	5s
check-missing-features-in-docs	32s
check-compiles	0s
check-compiles-no-std	0s
markdownlint	1m 11s
build-wasm-atomics	0s
msrv	0s
build-wasm	0s
	35m 13s

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