Fix example showcase #31840

Job	Run time
build (windows-latest)	3m 37s
check-missing-examples-in-docs	33s
check-doc	8m 44s
build (ubuntu-latest)	1m 39s
ci	1m 28s
build (macos-latest)	3m 47s
miri	12m 16s
run-examples-on-windows-dx12	15m 35s
check-bevy-internal-imports	7s
check-missing-features-in-docs	33s
markdownlint	1m 11s
check-compiles	2m 58s
msrv	1m 14s
build-wasm	39s
	54m 21s

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