fix(vue3): cannot access 'setup' prop of null

Author: Akryum

Diff for: packages/app-backend-vue3/src/components/data.ts

@@ -195,7 +195,7 @@ function processSetupState(instance) {
       let isOther = typeof value === 'function'
         || typeof value?.render === 'function'
         || typeof value?.__asyncLoader === 'function'
-        || (typeof value === 'object' && ('setup' in value || 'props' in value))
+        || (typeof value === 'object' && value && ('setup' in value || 'props' in value))
 
       if (rawData) {
         const info = getSetupStateInfo(rawData)