chore: increase uniswap coverage

[blurpesec]

Note

Medium Risk
Updates core contract-address heuristics for Uniswap routers, which can change transaction categorization outputs across multiple chains; main risk is mislabeling or missed matches for swaps if any addresses are incorrect.

Overview
Improves Uniswap detection in tx-categorize by expanding the heuristic contract address lists for Uniswap routers (notably UNISWAP_V4_ROUTER) to cover additional networks/versions.

Consolidates Uniswap Universal Router matching under a single UNISWAP_UNIVERSAL_ROUTER name (removing the separate _2 entry), and updates Jest categorization snapshots accordingly (e.g., UNISWAP_EXCHANGE toAddressName).

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