Make ChildNode and ParentNode extend Node again (#1088)

* Updated overridingTypes for ChildNode and ParentNode.

* Accept baselines.

* Restore overrides.

* Accepted baselines.

* Remove unnecessary 'name' fields.

Author: DanielRosenwasser

baselines/dom.generated.d.ts

@@ -3463,7 +3463,7 @@ declare var CharacterData: {
     new(): CharacterData;
 };
 
-interface ChildNode {
+interface ChildNode extends Node {
     /**
      * Inserts nodes just after node, while replacing strings in nodes with equivalent Text nodes.
      *
@@ -10471,23 +10471,23 @@ interface Node extends EventTarget {
     /**
      * Returns the children.
      */
-    readonly childNodes: NodeListOf<ChildNode & Node>;
+    readonly childNodes: NodeListOf<ChildNode>;
     /**
      * Returns the first child.
      */
-    readonly firstChild: (ChildNode & Node) | null;
+    readonly firstChild: ChildNode | null;
     /**
      * Returns true if node is connected and false otherwise.
      */
     readonly isConnected: boolean;
     /**
      * Returns the last child.
      */
-    readonly lastChild: (ChildNode & Node) | null;
+    readonly lastChild: ChildNode | null;
     /**
      * Returns the next sibling.
      */
-    readonly nextSibling: (ChildNode & Node) | null;
+    readonly nextSibling: ChildNode | null;
     /**
      * Returns a string appropriate for the type of node.
      */
@@ -10508,11 +10508,11 @@ interface Node extends EventTarget {
     /**
      * Returns the parent.
      */
-    readonly parentNode: (Node & ParentNode) | null;
+    readonly parentNode: ParentNode | null;
     /**
      * Returns the previous sibling.
      */
-    readonly previousSibling: (ChildNode & Node) | null;
+    readonly previousSibling: ChildNode | null;
     textContent: string | null;
     appendChild<T extends Node>(node: T): T;
     /**
@@ -10929,7 +10929,7 @@ declare var PannerNode: {
     new(context: BaseAudioContext, options?: PannerOptions): PannerNode;
 };
 
-interface ParentNode {
+interface ParentNode extends Node {
     readonly childElementCount: number;
     /**
      * Returns the child elements.

inputfiles/overridingTypes.jsonc

@@ -1,6 +1,12 @@
 {
     "mixins": {
         "mixin": {
+            "ChildNode": {
+                "extends": "Node"
+            },
+            "ParentNode": {
+                "extends": "Node"
+            },
             "Animatable": {
                 "methods": {
                     "method": {
@@ -754,25 +760,25 @@
                 "properties": {
                     "property": {
                         "parentNode": {
-                            "overrideType": "Node & ParentNode"
+                            "overrideType": "ParentNode"
                         },
                         "parentElement": {
                             "overrideType": "HTMLElement"
                         },
                         "childNodes": {
-                            "overrideType": "NodeListOf<ChildNode & Node>"
+                            "overrideType": "NodeListOf<ChildNode>"
                         },
                         "firstChild": {
-                            "overrideType": "ChildNode & Node"
+                            "overrideType": "ChildNode"
                         },
                         "lastChild": {
-                            "overrideType": "ChildNode & Node"
+                            "overrideType": "ChildNode"
                         },
                         "nextSibling": {
-                            "overrideType": "ChildNode & Node"
+                            "overrideType": "ChildNode"
                         },
                         "previousSibling": {
-                            "overrideType": "ChildNode & Node"
+                            "overrideType": "ChildNode"
                         }
                     }
                 }