BridgeJS: Fix optional Swift heap object handling for imported interface #2216

Job	Run time
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 0s
Build for native target (macos-15, Xcode_16.4)	3m 27s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 58s
build-examples	1m 16s
format	29s
check-bridgejs-generated	2m 46s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 28s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	12m 39s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	18m 3s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 55s
deploy-examples	0s
build-examples	25m 48s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	12m 39s
Build for native target (macos-15, Xcode_16.4)	3m 27s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 55s
check-bridgejs-generated	2m 46s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 0s
format	29s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	18m 3s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 28s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 58s
deploy-examples	0s
	2h 48m 34s

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