chore: replace all cn comments of fe to en version by volc api (#320)

frontend/infra/idl/idl-parser/src/unify/proto.ts

@@ -686,7 +686,7 @@ function convertFieldDefinition(
   if (!isProto3) {
     requiredness = optional ? 'optional' : 'required';
   } else if (rule === 'required') {
-    // TODO: 处理 optional 的情况，需要修改 proto-parser
+    // TODO: Handle optional cases, need to modify proto-parser
     requiredness = 'required';
   }