[Woo POS] VoiceOver Improvements

[staskus]

Tested POS with VoiceOver and Screen Curtain Turned On (Three Finger Triple Tap).

• When we enter variable products or check out, the first thing that is read is the "Back button". However, with native navigation bars, the first thing that is read is the content of the page.
• Two-finger scrub (move two fingers back and forth three times quickly, making a “z”) action is used to go back or dismiss an alert. However, it doesn't work on POS to come back from Checkout or from Variable products.
• There's no indication that the item was successfully added to the cart. Just a simple "Added" response when Voice Over is on could be great.

[dangermattic]

Thanks for reporting! 👍