Fix example showcase #31841

Job	Run time
check-bevy-internal-imports	4s
check-doc	9m 30s
check-missing-examples-in-docs	58s
build (windows-latest)	3m 1s
ci	1m 41s
miri	5m 43s
build (ubuntu-latest)	3m 34s
run-examples-on-windows-dx12	11m 3s
build (macos-latest)	3m 38s
check-missing-features-in-docs	32s
check-compiles	2m 51s
markdownlint	1m 42s
msrv	45s
build-wasm	44s
	45m 46s

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