BridgeJS: support closure types in imported JS APIs #1965

Job	Run time
Build for native target (macos-15, Xcode_16.4)	2m 30s
check-bridgejs-generated	2m 43s
format	31s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	2m 55s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	2m 56s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	3m 10s
build-examples	42m 23s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	2m 37s
deploy-examples	-1s
	59m 44s

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