Follow up `SchedulableExecutor` -> `SchedulingExecutor` rename #1723

Job	Run time
Build for native target (macos-15, Xcode_16.4)	49s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.0.2-release/ubuntu2204/swift-6.0...	4m 16s
format	40s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 8s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	6m 19s
check-bridgejs-generated	5m 33s
build-examples	11m 45s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	5m 10s
deploy-examples	0s
	40m 40s

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