`eth_supportedEntryPoints` is not supported in a batched request

[mmv08]

If you include an eth_supportedEntryPoints request in a batch, it returns an error saying the method is unsupported.

Example request:

curl --location 'https://api.stackup.sh/v1/node/key' \
--header 'Content-Type: application/json' \
--data '[
    {
        "method": "eth_chainId",
        "params": [],
        "id": 1,
        "jsonrpc": "2.0"
    },
    {
        "method": "eth_supportedEntryPoints",
        "params": [],
        "id": 2,
        "jsonrpc": "2.0"
    }
]'

Response:

[
    {
        "jsonrpc": "2.0",
        "id": 1,
        "result": "0x13881"
    },
    {
        "jsonrpc": "2.0",
        "id": 2,
        "error": {
            "code": -32601,
            "message": "the method eth_supportedEntryPoints does not exist/is not available"
        }
    }
]

I discovered this when working on a project that uses ethers v6, which batches requests by default. I had to disable batching to use the bundler.