BridgeJS: Optimize string encoding for JS-to-Swift crossings #77

Job	Run time
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	9m 41s
Build for native target (macos-15, Xcode_16.4)	2m 32s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 17s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 1s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 8s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	9m 43s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	9m 46s
format	32s
build-examples	9m 42s
prettier	10s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	9m 46s
check-bridgejs-generated	2m 46s
deploy-examples	1s
	1h 4m 5s

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