fix(ivy): content projection should not corrupt TNode data structures (#29130)

PR Close #29130

packages/core/src/render3/interfaces/node.ts

@@ -283,6 +283,14 @@ export interface TNode {
    */
   next: TNode|null;
 
+  /**
+   * The next projected sibling. Since in Angular content projection works on the node-by-node basis
+   * the act of projecting nodes might change nodes relationship at the insertion point (target
+   * view). At the same time we need to keep initial relationship between nodes as expressed in
+   * content view.
+   */
+  projectionNext: TNode|null;
+
   /**
    * First child of the current node.
    *