Platforms downloading broken

[MattKiazyk]

Describe the bug
Looks like Apple changed a few things on the platforms starting with Xcode 16 beta.

CryptexDiskImage is a new type of image that isn't handled.

<dict>
			<key>category</key>
			<string>simulator</string>
			<key>contentType</key>
			<string>cryptexDiskImage</string>
			<key>dictionaryVersion</key>
			<integer>2</integer>
			<key>downloadMethod</key>
			<string>mobileAsset</string>
			<key>fileSize</key>
			<integer>8455760175</integer>
			<key>identifier</key>
			<string>com.apple.dmg.iPhoneSimulatorSDK18_0_b1</string>
			<key>name</key>
			<string>iOS 18.0 beta Simulator Runtime</string>
			<key>platform</key>
			<string>com.apple.platform.iphoneos</string>
			<key>simulatorVersion</key>
			<dict>
				<key>buildUpdate</key>
				<string>22A5282m</string>
				<key>version</key>
				<string>18.0</string>
			</dict>
			<key>version</key>
			<string>18.0.0.1</string>
		</dict>
		```

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[timsutton]

It looks like Apple now uses the same (private) MobileAsset framework, as a client for their Pallas service that they use for other OTA updates, to download these too now. They look a lot closer to device restore images now even though ultimately they're still a .runtime mounted at a path.