BridgeJS: Simplify Stack ABI for Optional #2402

Job	Run time
prettier	7s
check-bridgejs-generated	8m 20s
build-examples	18m 6s
Build for native target (macos-15, Xcode_16.4)	2m 7s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 14s
format	30s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 2s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	3m 11s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	3m 26s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	3m 16s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	3m 26s
deploy-examples	0s
	48m 45s

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