Make wifi_item width match parent

Make wifi_item width match the parent width instead of hardcoding
200dip. This is only used by the P2P dialogs, and only results in the
PIN entry text box spanning the entire dialog instead of the 200dip.

Bug: 234326049
Test: adb shell cmd wifi launch-dialog-p2p-invitation-received name -p,
verify dialog looks OK

Change-Id: Id57ec4ae769fd2fc8fda9fb9eb8104ee54c9b28a
1 file changed