BridgeJS: Optimize string encoding for JS-to-Swift crossings #73

Job	Run time
build-examples	8m 11s
Build for native target (macos-15, Xcode_16.4)	2m 45s
prettier	10s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 7s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	8m 11s
check-bridgejs-generated	2m 44s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	8m 13s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	8m 12s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 56s
format	34s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	8m 14s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 14s
deploy-examples	1s
	56m 32s

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