VirtualKeyBoard: Handle UX fallouts of VirtualKeyPopup overflow.

Don't close the popup on the first hold_release, ensuring it won't
immediately close on a *different* key if the finger hasn't moved.

If the finger *did* move, that's a quick swipe, and that's unaffected by
this tweak.

frontend/ui/widget/virtualkeyboard.lua

@@ -520,6 +520,17 @@ function VirtualKeyPopup:init()
                 virtual_key.hold_callback = nil
                 -- close popup on hold release
                 virtual_key.onHoldReleaseKey = function()
+                    -- NOTE: Check our *parent* key!
+                    if parent_key.ignore_key_release then
+                        parent_key.ignore_key_release = nil
+                        return true
+                    end
+                    Device:performHapticFeedback("LONG_PRESS")
+                    if virtual_key.keyboard.ignore_first_hold_release then
+                        virtual_key.keyboard.ignore_first_hold_release = false
+                        return true
+                    end
+
                     virtual_key:onTapSelect(true)
                     UIManager:close(self)
                     return true
@@ -630,13 +641,19 @@ function VirtualKeyPopup:init()
     }
     if position_container.dimen.x < 0 then
         position_container.dimen.x = 0
+        -- We effectively move the popup, which means the key underneath our finger may no longer *exactly* be parent_key.
+        -- Make sure we won't close the popup right away, as that would risk being a *different* key, in order to make that less confusing.
+        parent_key.ignore_key_release = true
     elseif position_container.dimen.x + keyboard_frame.dimen.w > Screen:getWidth() then
         position_container.dimen.x = Screen:getWidth() - keyboard_frame.dimen.w
+        parent_key.ignore_key_release = true
     end
     if position_container.dimen.y < 0 then
         position_container.dimen.y = 0
+        parent_key.ignore_key_release = true
     elseif position_container.dimen.y + keyboard_frame.dimen.h > Screen:getHeight() then
         position_container.dimen.y = Screen:getHeight() - keyboard_frame.dimen.h
+        parent_key.ignore_key_release = true
     end
 
     self[1] = position_container