Fix cursorShape over fields inside a HFlickable

Bug introduced in 6b907, made the cursor stay as a normal arrow when
hovering text fields/areas inside a HFlickable due to the
HKineticScrollingDisabler's width/height being incorrectly set.

TODO.md

@@ -3,7 +3,6 @@
 - refresh server list button
 - server list sorting method / explain what the % number is (stability)
 - spam alt+shift+a/going to room when starting app on server browser → segfault
-- cursor shape in HBox/HTabbedBox pages over fields
 - login with account already added → infinite spinner in room list
 - verify onKeyboardAccept/Cancel things respect button enabled state
 

src/gui/Base/HFlickable.qml

@@ -17,12 +17,17 @@ Flickable {
     Component.onCompleted: {
         kineticScrollingDisabler = Qt.createComponent(
             "HKineticScrollingDisabler.qml"
-        ).createObject(flickable, {
-            flickable: flickable,
-            width: enabled ? flickable.width : 0,
-            height: enabled ? flickable.height : 0,
-        })
+        ).createObject(flickable, {flickable})
+
+        kineticScrollingDisabler.width = Qt.binding(() =>
+            kineticScrollingDisabler.enabled ? flickable.width : 0
+        )
+        kineticScrollingDisabler.height = Qt.binding(() =>
+            kineticScrollingDisabler.enabled ? flickable.height : 0
+        )
     }
 
     property var kineticScrollingDisabler
+    property var pr: kineticScrollingDisabler.enabled
+    onPrChanged: print("pr changed:", pr)
 }