UI: rounded border should use camera instead of windows #39010

Job	Run time
check-bevy-internal-imports	6s
check-cfg	1m 30s
build (windows-latest)	4m 54s
check-doc	7m 49s
build (ubuntu-latest)	2m 7s
check-missing-examples-in-docs	28s
build (macos-latest)	5m 9s
ci	2m 18s
miri	8m 49s
run-examples-macos-metal	4m 34s
toml	2m 7s
typos	10s
check-missing-features-in-docs	30s
markdownlint	1m 21s
check-compiles	3m 0s
build-wasm	39s
msrv	53s
	46m 24s

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