feat: Add default trait support #3871

Job	Run time
apple-ci (macos-13, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	13m 0s
apple-downstream (macos-13, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	5m 5s
linux-ci (5.9-amazonlinux2)	3m 42s
apple-ci (macos-13, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd generation)...	9m 23s
apple-downstream (macos-13, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd gen...	7m 10s
linux-ci (5.9-focal)	3m 48s
apple-ci (macos-13, Xcode_15.2, platform=OS X)	7m 31s
linux-ci (5.10-amazonlinux2)	3m 38s
apple-downstream (macos-13, Xcode_15.2, platform=OS X)	5m 50s
apple-downstream (macos-14, Xcode_15.4, platform=iOS Simulator,OS=17.5,name=iPhone 15)	2m 26s
linux-ci (5.10-jammy)	3m 46s
apple-ci (macos-14, Xcode_15.4, platform=iOS Simulator,OS=17.5,name=iPhone 15)	6m 1s
apple-downstream (macos-14, Xcode_15.4, platform=tvOS Simulator,OS=17.5,name=Apple TV 4K (3rd gen...	2m 27s
apple-ci (macos-14, Xcode_15.4, platform=tvOS Simulator,OS=17.5,name=Apple TV 4K (3rd generation)...	4m 30s
apple-downstream (macos-14, Xcode_15.4, platform=OS X)	3m 13s
apple-ci (macos-14, Xcode_15.4, platform=OS X)	3m 38s
linux-downstream (5.9-amazonlinux2)	3m 28s
linux-downstream (5.9-focal)	3m 27s
linux-downstream (5.10-amazonlinux2)	3m 30s
linux-downstream (5.10-jammy)	3m 27s
	1h 39m 0s

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