[NFC] BridgeJS: Move out default argument tests into a separate suite… #2415

Job	Run time
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 57s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 22s
prettier	11s
format	33s
build-examples	19m 35s
check-bridgejs-generated	2m 36s
Build for native target (macos-15, Xcode_16.4)	2m 42s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	12m 6s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	17m 14s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 9s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	13m 55s
deploy-examples	9s
	1h 28m 29s

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