fix(efi): drop defensive list wrap per review

The list() copy on line 378 was load-bearing only if options were
mutated downstream, but the EFI branch reassigns options via
dict.fromkeys() (line 381) and the non-EFI branch passes through
to mount() without mutating. Drop the copy.

archinstall/lib/installer.py

@@ -375,7 +375,7 @@ class Installer:
 		# it would be none if it's btrfs as the subvolumes will have the mountpoints defined
 		if part_mod.mountpoint:
 			target = self.target / part_mod.relative_mountpoint
-			options = list(part_mod.mount_options)
+			options = part_mod.mount_options
 
 			if part_mod.is_efi():
 				options = list(dict.fromkeys(options + ['fmask=0077', 'dmask=0077']))