Clear the page stack before pushing new details pages

Makes little difference on the phone, but when running on desktop this
avoids some weird page orders.

src/app/BusDelegate.qml

@@ -92,6 +92,6 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }
 

src/app/CarRentalDelegate.qml

@@ -72,6 +72,6 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }
 

src/app/EventDelegate.qml

@@ -69,5 +69,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }

src/app/FlightDelegate.qml

@@ -109,5 +109,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }

src/app/HotelDelegate.qml

@@ -56,5 +56,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }

src/app/RestaurantDelegate.qml

@@ -47,5 +47,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }

src/app/TimelineDelegate.qml

@@ -41,6 +41,13 @@ Kirigami.AbstractCard {
     property alias arrival: _controller.arrival
     property alias departure: _controller.departure
 
+    function showDetails(detailsComponent) {
+        while (applicationWindow().pageStack.depth > 1) {
+            applicationWindow().pageStack.pop();
+        }
+        applicationWindow().pageStack.push(detailsComponent);
+    }
+
     header: Rectangle {
         id: headerBackground
         Kirigami.Theme.colorSet: controller.isCurrent ? Kirigami.Theme.Selection : Kirigami.Theme.Complementary

src/app/TouristAttractionDelegate.qml

@@ -48,5 +48,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }

src/app/TrainDelegate.qml

@@ -104,5 +104,5 @@ App.TimelineDelegate {
         }
     }
 
-    onClicked: applicationWindow().pageStack.push(detailsComponent);
+    onClicked: showDetails(detailsComponent)
 }