Insure welcome screen respects scene margins #8990

Job	Run time
build (arm64-android, android_arm64_v8a, OFF, android-arm64)	10m 5s
build (arm64-android, android_arm64_v8a, ON, android-arm64)	8m 30s
build (arm-neon-android, android_armv7, OFF, android-arm-neon)	9m 23s
build (arm-neon-android, android_armv7, ON, android-arm-neon)	9m 24s
build (x64-android, android_x86_64, OFF, android-x64)	9m 17s
build (x64-android, android_x86_64, ON, android-x64)	8m 16s
build (x86-android, android_x86, OFF, android-x86)	8m 59s
build (x86-android, android_x86, ON, android-x86)	10m 38s
deploy to play store	1m 25s
comment (commit)	7s
comment (pr)	0s
	1h 16m 4s

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