enable using JavaScriptKit with packages that have macros that use SwiftSyntax 601 #1658

Job	Run time
Build for native target (macos-15, Xcode_16.4)	40s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	30m 5s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.0.2-release/ubuntu2204/swift-6.0...	4m 46s
format	34s
check-bridgejs-generated	5m 43s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 7s
build-examples	12m 41s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 52s
deploy-examples	0s
	1h 7m 28s

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