fix(power_menu): update blur effect border color to 'None'

Updated the border color for the blur effect in the power menu to 'None' instead of 'custom'. This change ensures a cleaner appearance and aligns with design specifications. The adjustment was made in both the main window and the blur background settings, enhancing visual consistency across the application.

src/core/widgets/yasb/power_menu.py

@@ -210,21 +210,20 @@ def __init__(self, parent_button, uptime,blur, blur_background, animation_durati
         self.center_on_screen()
 
         if blur:
-
             Blur(
                 self.winId(),
                 Acrylic=False,
                 DarkMode=False,
                 RoundCorners=False,
-                BorderColor="custom"
+                BorderColor="None"
             )
         if blur_background:
             Blur(
                 self.overlay.winId(),
                 Acrylic=False,
                 DarkMode=False,
                 RoundCorners=False,
-                BorderColor="custom"
+                BorderColor="None"
             )