增加初始化时检查临时文件夹内是否有空白文件夹，如果有则清理 #72

Job	Run time
Desktop (windows-latest, win-x64)	5m 46s
Client (windows-latest, win-x64)	4m 33s
Server (windows-latest, win-x64)	5m 8s
Server (macOS-latest, osx-x64)	45s
Server (macOS-latest, osx-arm64)	45s
Server (ubuntu-latest, linux-x64)	2m 23s
Server (ubuntu-latest, linux-arm)	3m 42s
Server (ubuntu-latest, linux-arm64)	3m 42s
Server (ubuntu-latest, linux-musl-x64)	1m 31s
Server (ubuntu-latest, linux-musl-arm)	1m 28s
Server (ubuntu-latest, linux-musl-arm64)	2m 4s
Docker	53s
Release	2m 11s
	34m 51s

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