BridgeJS: Fix issues exporting nested types #2756

Job	Run time
prettier	14s
build-examples (PlayBridgeJS)	12m 34s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	20m 24s
check-bridgejs-generated	3m 45s
build-examples (OffscrenCanvas)	10m 50s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	14m 1s
build-examples (Embedded)	10m 3s
Build for native target (macos-15, Xcode_26.0.1)	3m 16s
build-examples (Basic)	9m 36s
format	44s
build-examples (ActorOnWebWorker)	10m 7s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 34s
build-examples (Multithreading)	10m 6s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 19s
deploy-examples	0s
build-examples-deploy	0s
	2h 2m 33s

Provide feedback