fix(renderer): fix patch error in unstable slot

Author: linghaoSu

packages/runtime-core/src/renderer.ts

@@ -1098,7 +1098,9 @@ function baseCreateRenderer(
         dynamicChildren &&
         // #2715 the previous fragment could've been a BAILed one as a result
         // of renderSlot() with no valid children
-        n1.dynamicChildren
+        n1.dynamicChildren &&
+        // #9200 in some case stable fragment in deep unstable slot
+        n1?.children?.length === n2?.children?.length
       ) {
         // a stable fragment (template root or <template v-for>) doesn't need to
         // patch children order, but it may contain dynamicChildren.