ux: use fixed width for commit history context menu #3710

Job	Run time
Prepare version string	6s
Build / Build Linux (arm64)	3m 17s
Build / Build Windows x64	3m 36s
Build / Build macOS (Apple Silicon)	2m 34s
Build / Build Windows ARM64	3m 32s
Build / Build Linux	3m 28s
Build / Build macOS (Intel)	4m 1s
Package / Package Linux (linux-x64)	1m 8s
Package / Package macOS (osx-x64)	20s
Package / Package Windows (win-x64)	21s
Package / Package macOS (osx-arm64)	19s
Package / Package Windows (win-arm64)	22s
Package / Package Linux (linux-arm64)	51s
	23m 55s

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