add clear() to PageView

scripts/components/pager/pageview.lua

@@ -51,11 +51,7 @@ end
 ---Replace the current pageStack with a new root page
 ---@param rootPage Page
 function PageView:replace(rootPage)
-    --clear pageStack
-    while self:get() do
-        self:back()
-    end
-
+    self:clear()
     self:navigate(rootPage)
 end
 
@@ -70,6 +66,14 @@ function PageView:back()
     popStack(self.pageStack)
 end
 
+---Clear the pageStack
+function PageView:clear()
+    --clear pageStack
+    while self:get() do
+        self:back()
+    end
+end
+
 ---@param deltaTime number # frametime in seconds
 function PageView:render(deltaTime)
     if self:get() then