fix: 修复 grpc case 缺少 break 导致序列化数据错乱

Author: starifly

app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java

@@ -140,6 +140,7 @@ public void serialize(ByteBufferOutput output) {
             }
             case "grpc": {
                 output.writeString(path);
+                break;
             }
             case "httpupgrade": {
                 output.writeString(host);
@@ -200,6 +201,7 @@ public void deserialize(ByteBufferInput input) {
             }
             case "grpc": {
                 path = input.readString();
+                break;
             }
             case "httpupgrade": {
                 host = input.readString();