feat(runtime-vapor): add withVaporCtx helper to manage currentInstance context in slot blocks (#14007)

Author: edison1105

packages/compiler-vapor/__tests__/__snapshots__/compile.spec.ts.snap

@@ -26,7 +26,7 @@ export function render(_ctx) {
 `;
 
 exports[`compile > custom directive > component 1`] = `
-"import { resolveComponent as _resolveComponent, resolveDirective as _resolveDirective, setInsertionState as _setInsertionState, createComponentWithFallback as _createComponentWithFallback, withVaporDirectives as _withVaporDirectives, createIf as _createIf, template as _template } from 'vue';
+"import { resolveComponent as _resolveComponent, resolveDirective as _resolveDirective, setInsertionState as _setInsertionState, createComponentWithFallback as _createComponentWithFallback, withVaporDirectives as _withVaporDirectives, createIf as _createIf, withVaporCtx as _withVaporCtx, template as _template } from 'vue';
 const t0 = _template("<div></div>")
 
 export function render(_ctx) {
@@ -35,7 +35,7 @@ export function render(_ctx) {
   const _directive_hello = _resolveDirective("hello")
   const _directive_test = _resolveDirective("test")
   const n4 = _createComponentWithFallback(_component_Comp, null, {
-    "default": () => {
+    "default": _withVaporCtx(() => {
       const n0 = _createIf(() => (true), () => {
         const n3 = t0()
         _setInsertionState(n3, null, true)
@@ -44,7 +44,7 @@ export function render(_ctx) {
         return n3
       })
       return n0
-    }
+    })
   }, true)
   _withVaporDirectives(n4, [[_directive_test]])
   return n4