BridgeJS: Restore `new SwiftClass`-style constructor by using `Object.create` #1620

Job	Run time
Build for native target (macos-15, Xcode_16.4)	43s
format	29s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	4m 49s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.0.2-release/ubuntu2204/swift-6.0...	4m 48s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	5m 3s
check-bridgejs-generated	5m 42s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	5m 3s
build-examples	11m 44s
deploy-examples	0s
	38m 21s

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