feat: Add opt-in pointer identity mode for SwiftHeapObject wrappers #2579

Job	Run time
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	2m 59s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 1s
Build for native target (macos-15, Xcode_16.4)	2m 59s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	17m 16s
build-examples	19m 51s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	18m 1s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 53s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 39s
format	33s
prettier	14s
check-bridgejs-generated	2m 52s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	12m 59s
deploy-examples	0s
	1h 37m 17s

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