feat(web): support for ERC20 Tokens in the General Escrow flow

[kemuru]

WIP

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PR-Codex overview

This PR introduces alchemy-sdk integration and refactors token handling and address validation.

Detailed summary

• Added alchemy-sdk for token metadata retrieval
• Refactored token handling functions
• Updated address validation patterns
• Implemented useQueryRefetch for query refetching

The following files were skipped due to too many changes: web/src/pages/MyTransactions/TransactionDetails/PreviewCardButtons/TimeOutButton.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/TokenSelector/TokenItem/Balance.tsx, web/src/utils/initializeTokens.ts, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/TokenSelector/TokenItem/index.tsx, web/src/components/PreviewCard/index.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/TokenSelector/DropdownButton.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/MaxBalance.tsx, web/src/components/TransactionInfo/index.tsx, web/src/hooks/useFilteredTokens.ts, web/src/pages/NewTransaction/NavigationButtons/NextButton.tsx, web/src/components/PreviewCard/Terms/Description.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/TokenSelector/TokenListModal.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/TokenSelector/index.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/AmountField.tsx, web/src/pages/NewTransaction/Preview/index.tsx, web/src/hooks/useEscrowTimelineItems.tsx, web/src/components/TransactionCard/index.tsx, web/src/pages/MyTransactions/TransactionDetails/PreviewCardButtons/RaiseDisputeButton.tsx, web/src/pages/NewTransaction/Terms/Payment/GeneralTransaction/TokenAndAmount/index.tsx, web/src/context/NewTransactionContext.tsx, web/src/pages/MyTransactions/TransactionDetails/index.tsx, web/src/pages/NewTransaction/NavigationButtons/DepositPaymentButton.tsx, yarn.lock

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[Harman-singh-waraich]

looks good, left a comment.

[Harman-singh-waraich]

lgtm