BridgeJS: Support optional @JSClass as exported function parameters #2677

Job	Run time
build-examples	21m 9s
Build for native target (macos-15, Xcode_16.4)	2m 44s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 6s
format	35s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	11m 3s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	12m 44s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	13m 27s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 13s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	16m 25s
prettier	12s
check-bridgejs-generated	2m 41s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 53s
deploy-examples	0s
	1h 31m 12s

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