BridgeJS: support jsName for imported bindings #1972

Job	Run time
check-bridgejs-generated	2m 48s
build-examples	44m 8s
format	33s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 20s
Build for native target (macos-15, Xcode_16.4)	3m 5s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 7s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	16m 6s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	14m 4s
deploy-examples	0s
	1h 47m 11s

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