[Add en-GB Language and KB to Autounattend]

same for french installs, the UI is built in fr-FR not fr-CA, so fr-CA will always popup the window

<SetupUILanguage>

<UILanguage>fr-FR</UILanguage>

<WillShowUI>Never</WillShowUI>

</SetupUILanguage>

<InputLocale>0c0c:00001009</InputLocale> (Français Canada - Français Canada)

<SystemLocale>fr-CA</SystemLocale>

<UILanguage>fr-FR</UILanguage>

<UserLocale>fr-CA</UserLocale>

took me a while also