[macOS] Enable voiceover applescript defaults (#4824)

* feat: enable voiceover applescript in defaults

* refactor: reword comment

* fix: grammar in VO comment

images/macos/provision/configuration/configure-machine.sh

@@ -17,10 +17,13 @@ if [ -d "/Library/Application Support/VMware Tools" ]; then
     sudo "/Library/Application Support/VMware Tools/vmware-resolutionSet" 1176 885
 fi
 
-# Update VoiceOver Utility to allow VoiceOver to be controlled with AppleScript by creating a special file (SIP must be disabled)
+# Update VoiceOver Utility to allow VoiceOver to be controlled with AppleScript
+# by creating a special Accessibility DB file (SIP must be disabled) and
+# updating the user defaults system to reflect this change.
 if csrutil status | grep -Eq  "System Integrity Protection status: (disabled|unknown)"; then
     sudo bash -c 'echo -n "a" > /private/var/db/Accessibility/.VoiceOverAppleScriptEnabled'
 fi
+defaults write com.apple.VoiceOver4/default SCREnableAppleScript -bool YES
 
 # https://developer.apple.com/support/expiration/
 # Enterprise iOS Distribution Certificates generated between February 7 and September 1st, 2020 will expire on February 7, 2023.