build

Use modern env var for Android detection (#1537) #3001

Job	Run time
emulator	2m 45s
loom	8m 53s
jvm (8)	5m 53s
all-platforms (macos-14)	28m 29s
jvm (11)	5m 0s
all-platforms (ubuntu-latest)	8m 53s
jvm (17)	5m 1s
all-platforms (windows-latest)	14m 6s
jvm (19)	4m 54s
publish-website	5m 2s
publish	14m 26s
	1h 43m 22s

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