fix(money-activity): use bigint fromTokenMinimalUnit to fix lint error

Import fromTokenMinimalUnit from util/number/bigint instead of the
deprecated util/number path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: shane-t

app/components/UI/Money/hooks/useMoneyTransactionDisplayInfo.ts

@@ -22,7 +22,7 @@ import {
 } from '../constants/activityStyles';
 import { buildMoneyActivityFiatLine } from '../utils/moneyActivityFiat';
 import { moneyFormatFiat } from '../utils/moneyFormatFiat';
-import { fromTokenMinimalUnit } from '../../../../util/number';
+import { fromTokenMinimalUnit } from '../../../../util/number/bigint';
 import type {
   MoneyActivityTitleKey,
   MoneyActivityTransactionMeta,
@@ -33,15 +33,9 @@ export interface MoneyTransactionDisplayInfo {
   description: string | undefined;
   primaryAmount: string;
   fiatAmount: string;
-  isIncoming: boolean;
-  /** Symbol of the source token (e.g. "USDC", "ETH"). */
   sourceTokenSymbol: string | undefined;
-  /** Remote image URI for the source token avatar (ERC-20 tokens). */
   sourceTokenImage: string | undefined;
-  /**
-   * Chain ID of the source token — set only for native tokens (e.g. ETH)
-   * so the item can render the network logo as the token avatar.
-   */
+  // only for native tokens so we can show the network logo
   sourceTokenChainId: string | undefined;
 }
 
@@ -132,7 +126,6 @@ function buildSourceTokenAmount(
   decimals: number,
   symbol: string,
 ): string {
-  // fromTokenMinimalUnit expects a decimal string
   const decimalStr = String(Number(rawAmount));
   const humanReadable = fromTokenMinimalUnit(decimalStr, decimals);
   const num = parseFloat(humanReadable);
@@ -175,7 +168,7 @@ export function useMoneyTransactionDisplayInfo(
   const payTokenAddress = tx.metamaskPay?.tokenAddress as Hex | undefined;
   const payTokenChainId = tx.metamaskPay?.chainId as Hex | undefined;
 
-  // ERC-20 token lookup (e.g. USDC on mainnet).
+  // look up erc-20 tokens
   const payToken = useSelector((state: RootState) =>
     payTokenAddress && payTokenChainId
       ? selectSingleTokenByAddressAndChainId(
@@ -186,8 +179,7 @@ export function useMoneyTransactionDisplayInfo(
       : undefined,
   );
 
-  // Native token fallback (e.g. ETH) — ERC-20 lookup returns undefined for
-  // native tokens since they aren't in the token registry.
+  // Native token fallback - these are not in the token registry
   const nativeTicker = useSelector((state: RootState) => {
     if (payToken || !payTokenAddress || !payTokenChainId) {
       return undefined;
@@ -203,8 +195,7 @@ export function useMoneyTransactionDisplayInfo(
 
     const sourceTokenSymbol = payToken?.symbol ?? nativeTicker;
     const sourceTokenImage = payToken?.image;
-    // Pass the chain ID for native tokens so the item can render the
-    // network logo (e.g. the ETH logo for Ethereum mainnet).
+    
     const sourceTokenChainId =
       isNative && payTokenChainId ? payTokenChainId : undefined;
 
@@ -216,14 +207,10 @@ export function useMoneyTransactionDisplayInfo(
       const requiredAsset = getRequiredAsset(tx);
       if (requiredAsset) {
         if (isNative) {
-          // For native tokens (e.g. ETH), requiredAssets[0].amount is stored
+          // For native tokens requiredAssets[0].amount is stored
           // in USDC-equivalent 6-decimal units (the USD value of the deposit),
-          // NOT in wei.  Convert to the native token amount via the exchange
-          // rate so we can display "+0.000445 ETH" instead of a nonsensical
-          // scientific-notation value.
-          //
-          // Use BigNumber throughout to avoid floating-point precision issues
-          // (plain division produces values like 0.000445091800067904466).
+          // NOT in wei. 
+
           const nativeToUsdRate = nativeTicker
             ? currencyRates?.[nativeTicker]?.conversionRate
             : undefined;
@@ -255,7 +242,6 @@ export function useMoneyTransactionDisplayInfo(
 
     // --- Fiat amount ---
     // Prefer calculated market-rate value.
-    // Fall back to metamaskPay.targetFiat when unavailable.
     let fiatAmount = buildMoneyActivityFiatLine(
       tx,
       currencyRates,
@@ -269,9 +255,7 @@ export function useMoneyTransactionDisplayInfo(
       }
     }
 
-    // --- Description ---
-    // Explicit moneySubtitle takes priority; otherwise surface the source
-    // token symbol (e.g. "USDC" or "ETH") so it's clear what was deposited.
+    // Explicit moneySubtitle takes priority; otherwise use source token symbol
     const description = subtitle ?? sourceTokenSymbol;
 
     return {