fix(slot): pass right data into component inside slot

Author: Stupid

src/platforms/mp/compiler/codegen/convert/component.js

@@ -14,7 +14,7 @@ export default {
   convertComponent (ast, components, slotName) {
     const { attrsMap, tag, mpcomid, slots } = ast
     if (slotName) {
-      attrsMap['data'] = `{{...$root[$p], $root}}`
+      attrsMap['data'] = `{{...$root[$k], $root}}`
       attrsMap['is'] = `{{${slotName}}}`
     } else {
       const slotsName = getSlotsName(slots)