eth_newFilter / eth_getFilterChanges not working

[max-chechel-vc]

Description

There was a breaking change introduced in this PR

The problem is that whether shared cache is configured or not we try to write filter id to the shared cache:
https://github.com/hashgraph/hedera-json-rpc-relay/blob/main/packages/relay/src/lib/services/ethService/ethFilterService/index.ts#L94

But then we read the key from whatever cache is enabled:
https://github.com/hashgraph/hedera-json-rpc-relay/blob/main/packages/relay/src/lib/services/ethService/ethFilterService/index.ts#L212

As result if there's no shared cache set, this functionality doesn't work.

Steps to reproduce

1. Set up Hedera JSON RPC relay so that Filters are enabled but there's no Redis cache set up
2. Create filter:

curl -H "Content-Type: application/json" -X POST -d'{"method":"eth_newFilter","params":[{"topics":["0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822"],"address":["0x1e375f8947dffee57c7713f3176b01858bfba104"]}],"id":2,"jsonrpc":"2.0"}'  http://your-hedera-relay

3. Try to request filter changes (while specifying the filter ID obtained on the previous step):
   curl -H "Content-Type: application/json" -X POST -d'{"method":"eth_getFilterChanges","params":[""],"id":4,"jsonrpc":"2.0"}' http://your-hedera-relay
4. Receive an error:

{"error":{"code":-32001,"name":"Filter not found","message":"[Request ID: 063e3a42-c3ee-4579-a9d5-cac84cd07a42] Filter not found"},"jsonrpc":"2.0","id":4}

Additional context

No response

Hedera network

mainnet, testnet

Version

v0.50.1

Operating system

Linux