[kcm/kwinrules] Extend upper limit of position and size spinners

Currently, the spinners used to edit position and size rules have an upper
limit of 4098, which may be not enough for wide/hdpi/mutiple screens.

The property itself has no such limit in the `.kcfg` schema
This is just an issue with the editor.

BUG: 421892
FIXED-IN: 5.19

kcmkwin/kwinrules/package/contents/ui/ValueEditor.qml

@@ -165,7 +165,7 @@ Loader {
                 Layout.preferredWidth: 50   // 50%
                 Layout.fillWidth: true
                 from: 0
-                to: 4098
+                to: 32767
                 value: (controlType == RuleItem.Size) ? ruleValue.width : ruleValue.x
             }
             QQC2.Label {
@@ -178,7 +178,7 @@ Loader {
                 id: coordY
                 editable: true
                 from: 0
-                to: 4098
+                to: 32767
                 Layout.preferredWidth: 50   // 50%
                 Layout.fillWidth: true
                 value: (controlType == RuleItem.Size) ? ruleValue.height : ruleValue.y