Async animation loading improvements #1131

Job	Run time
Build XCFramework	16m 24s
Build Example App	6m 37s
Build Package (13.2.1)	4m 27s
Build Package (13.4.1)	4m 8s
Build Package (14.2)	3m 40s
Build Package (14.3)	4m 1s
Test Carthage support	10m 27s
Lint CocoaPods podspec	5m 30s
Lint Embedded Libraries	31s
Test Swift Package Manager support	3m 43s
Lint Swift	1m 11s
Test Package	58m 9s
	1h 58m 48s

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