chore: remove isSelfClosing property

packages/compiler-core/__tests__/testUtils.ts

@@ -56,7 +56,6 @@ export function createElementWithCodegen(
     ns: Namespaces.HTML,
     tag: 'div',
     tagType: ElementTypes.ELEMENT,
-    isSelfClosing: false,
     props: [],
     children: [],
     codegenNode: {

packages/compiler-core/src/ast.ts

@@ -130,7 +130,6 @@ export interface BaseElementNode extends Node {
   tagType: ElementTypes
   props: Array<AttributeNode | DirectiveNode>
   children: TemplateChildNode[]
-  isSelfClosing?: boolean
 }
 
 export interface PlainElementNode extends BaseElementNode {

packages/compiler-ssr/src/transforms/ssrTransformComponent.ts

@@ -322,7 +322,6 @@ function createVNodeSlotBranch(
     ns: Namespaces.HTML,
     tag: 'template',
     tagType: ElementTypes.TEMPLATE,
-    isSelfClosing: false,
     props: wrapperProps,
     children,
     loc: locStub,