fix: 储蓄卡管理，银行可以为空。

(cherry picked from commit 9bcc9f2011)

src/views/invest/debitcard/index.vue

@@ -281,7 +281,7 @@ const data = reactive({
   rules: {
     name: [{ required: true, message: '储蓄账户名称不能为空', trigger: 'blur' }],
     code: [{ required: true, message: '储蓄账户卡号不能为空', trigger: 'blur' }],
-    bankId: [{ required: true, message: '银行不能为空', trigger: 'blur' }],
+    // bankId: [{ required: true, message: '银行不能为空', trigger: 'blur' }],
     status: [{ required: true, message: '账户状态不能为空', trigger: 'blur' }],
     debitType: [{ required: true, message: '储蓄账户类型不能为空', trigger: 'blur' }],
     balance: [{ required: true, message: '余额不能为空', trigger: 'blur' }]