generate indices for Mikktspace #29728

Job	Run time
miri	8m 23s
run-examples-on-windows-dx12	19m 14s
build (windows-latest)	8m 2s
build (ubuntu-latest)	3m 39s
build (macos-latest)	6m 4s
check-bevy-internal-imports	7s
check-doc	9m 4s
check-missing-examples-in-docs	42s
ci	3m 54s
check-missing-features-in-docs	1m 2s
markdownlint	1m 20s
check-compiles	4m 29s
build-wasm	1m 31s
msrv	3m 30s
	1h 11m 1s

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