BridgeJS: fix namespaced Swift class access in JS codegen #2388

Job	Run time
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 1s
check-bridgejs-generated	2m 47s
build-examples	3m 45s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	3m 45s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	3m 38s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	3m 40s
Build for native target (macos-15, Xcode_16.4)	2m 10s
format	32s
prettier	9s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	3m 45s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 7s
deploy-examples	1s
	30m 20s

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