chore: Don't fail prepare-release when build request is missing #1493

Job	Run time
linux (jammy, 5.9)	11m 54s
apple (macos-14, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	14m 43s
linux (jammy, 6.0)	12m 46s
apple (macos-14, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd generation) (a...	12m 50s
apple (macos-14, Xcode_15.2, platform=visionOS Simulator,OS=1.0,name=Apple Vision Pro)	14m 17s
apple (macos-14, Xcode_15.2, platform=macOS)	14m 54s
apple (macos-15, Xcode_16.1, platform=iOS Simulator,OS=18.1,name=iPhone 16)	10m 52s
apple (macos-15, Xcode_16.1, platform=tvOS Simulator,OS=18.1,name=Apple TV 4K (3rd generation) (a...	9m 55s
apple (macos-15, Xcode_16.1, platform=visionOS Simulator,OS=2.1,name=Apple Vision Pro)	9m 39s
apple (macos-15, Xcode_16.1, platform=macOS)	9m 46s
	2h 1m 36s

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