chore: @web3modal/standalone package replaced with @walletconnect/modal

[DamirSQA]

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[kujtimprenkuSQA]

Since the filtering by chainId is not working properly as it used to, the way to include only wallets that fully support NEAR + WalletConnect was to specifically add them following the WalletConnect docs.

First excluded all wallets then included only specific wallets that we need for now only Opto Wallet shows up in the WalletConnect modal.