[l2geth]: RPC doesn't support query block with unsafe, safe and finalized

[abelliumnt]

Describe the bug Mantle rpc doesn't support query block with unsafe, safe and finalized.

To Reproduce Steps to reproduce the behavior:

1. Open Postman
2. URL: https://rpc.mantle.xyz
3. Post Body

   {
   "jsonrpc": "2.0",
   "method": "eth_getBlockByNumber",
   "params": ["safe", false],
   "id": 0
   }

4. Click Send button
5. Check response:

   {
   "jsonrpc": "2.0",
   "error": {
       "code": -32602,
       "message": "invalid argument 0: hex string without 0x prefix"
   },
   "id": 0
   }

Expected behavior A clear and concise description of what you expected to happen.

Screenshots