Fix sprite picking backend not considering the viewport of the camera… #26

Job	Run time
build (windows-latest)	9m 0s
build (ubuntu-latest)	4m 33s
build (macos-latest)	4m 22s
ci	4m 48s
miri	11m 11s
toml	1m 52s
check-bevy-internal-imports	4s
check-doc	9m 1s
check-missing-examples-in-docs	30s
typos	8s
run-examples-macos-metal	6m 28s
check-missing-features-in-docs	27s
markdownlint	1m 4s
check-compiles	7m 47s
check-compiles-no-std	50s
build-wasm	1m 37s
msrv	1m 54s
build-wasm-atomics	2m 0s
	1h 7m 36s

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