Box JSException storage in a class to fit the direct typed-error convention #102

Job	Run time
format	32s
build-examples	21m 36s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	12m 44s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 26s
Build for native target (macos-15, Xcode_16.4)	3m 15s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	10m 25s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	10m 24s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	14m 0s
check-bridgejs-generated	3m 4s
prettier	11s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 2s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 22s
deploy-examples	0s
	1h 26m 1s

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