Improve efficiency of current directory detection

Use $PWD.Path instead of Get-Location | Select-Object for better performance

Co-authored-by: ccmywish <63459097+ccmywish@users.noreply.github.com>

tool/installer.ps1

@@ -110,7 +110,7 @@ function Set_Install_Dir {
             output_info "Detected Downloads directory: $Directory"
         } else {
             # 使用当前目录作为默认值
-            $Directory = Get-Location | Select-Object -ExpandProperty Path
+            $Directory = $PWD.Path
             output_info "Using current directory: $Directory"
         }
     }