Resolve conflicts

Author: myovchev

CHANGELOG.md

@@ -13,6 +13,7 @@
 ### Fixes
 
 * Ensure relationship convert handler can handle properly some cases where the document and request modes are different.
+* Exclude unknown page types from the page manager.
 
 ## 4.19.0 (2025-07-09)
 

modules/@apostrophecms/page/ui/apos/logic/AposPagesManager.js

@@ -397,6 +397,7 @@ export default {
           pageTree = pageTree._children;
         }
 
+        pageTree = filterValidPages(pageTree);
         formatPage(pageTree);
 
         if (!pageTree.length && pageTree.length !== 0) {
@@ -415,13 +416,35 @@ export default {
           page.forEach(formatPage);
           return;
         }
+        if (!page._id) {
+          return;
+        }
 
         self.pagesFlat.push(klona(page));
 
         if (Array.isArray(page._children)) {
           page._children.forEach(formatPage);
         }
       }
+
+      function filterValidPages(page) {
+        const result = {};
+        if (!self.moduleOptions.validPageTypes.includes(page.type)) {
+          return result;
+        }
+
+        Object.assign(result, page);
+
+        result._children = [];
+        for (const child of page._children || []) {
+          const filteredChild = filterValidPages(child);
+          if (filteredChild._id) {
+            result._children.push(filteredChild);
+          }
+        }
+
+        return result;
+      }
     },
     getAllPagesTotal () {
       this.setAllPiecesSelection({