Fix invalid amount to send on sending money using QR code (#1064)

Author: igordanilcenko

app/src/main/java/com/tari/android/wallet/ui/fragment/send/addAmount/keyboard/KeyboardController.kt

@@ -293,6 +293,7 @@ class KeyboardController {
     ): TextView {
         val inflater = LayoutInflater.from(context)
         return if (enteringFirstDigit) { // first digit :: use the existing view
+            elements[0] = elements[0].copy(first = digit)
             elements[0].second
         } else { // inflate text view
             val textView = inflater.inflate(