Bug: walletconnect does not support eth_call method

[L03TJ3]

Description

We have not added eth_call as a supported method. wallet.polygon seems to use this for the approve request for relaying a meta-transaction

Reproduce (need some matic funds which are not matic:

1. go to https://wallet.polygon.technology/?redirectOnConnect=%2Fpolygon%2Fgas-swap
2. go to wallet.gooddollar
3. connect the two
4. on poly wallet, make sure you have switched to polygon mainnet (not zkevm)
5. on the left, at the bottom go to gas-swap
6. Select token which you want to use for gasless swap
7. select amount of matic
8. click approve
9. see console (matic) with: Unsupported request eth_call