NFC: BridgeJS: Refactor JSGlueGen with compositional optional handling and helper consolidation #2361

Job	Run time
format	30s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 57s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	3m 41s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	3m 25s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	3m 27s
check-bridgejs-generated	2m 40s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	3m 26s
Build for native target (macos-15, Xcode_16.4)	5m 9s
prettier	8s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 16s
build-examples	7m 22s
deploy-examples	1s
	36m 2s

Provide feedback