fix: prevent MeasureOverride from returning Infinity to Avalonia layout (#2136) #4409

Job	Run time
Prepare version string	6s
Build / Build Windows ARM64	3m 49s
Build / Build macOS (Intel)	4m 9s
Build / Build Linux	3m 27s
Build / Build Linux (arm64)	3m 38s
Build / Build macOS (Apple Silicon)	2m 13s
Build / Build Windows x64	3m 44s
Package / Package Linux (linux-x64)	1m 2s
Package / Package Windows (win-arm64)	32s
Package / Package macOS (osx-arm64)	18s
Package / Package Linux (linux-arm64)	57s
Package / Package macOS (osx-x64)	18s
Package / Package Windows (win-x64)	27s
	24m 40s

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