feat: Add opt-in identityMode pointer for SwiftHeapObject wrapper identity caching #37

Job	Run time
check-bridgejs-generated	2m 43s
prettier	13s
Build for native target (macos-15, Xcode_16.4)	2m 53s
build-examples	20m 31s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 9s
format	31s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	18m 14s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 37s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 19s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 0s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 4s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	13m 36s
deploy-examples	-1s
	1h 34m 49s

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