[Wallet]: Disable Dominant Color Background for iOS WebUI (#34847)

Fixes a crash that was occurring on iOS WebUI when selecting a token on the Send/Swap/Bridge screens

components/brave_wallet_ui/page/screens/send/send_screen/send_screen.tsx

@@ -159,6 +159,7 @@ export const SendScreen = React.memo(() => {
   const isPanel = useSafeUISelector(UISelectors.isPanel)
   const isMobile = useSafeUISelector(UISelectors.isMobile)
   const isMobileOrPanel = isMobile || isPanel
+  const isIOS = useSafeUISelector(UISelectors.isIOS)
   const isKeyboardVisible = useIsKeyboardVisible()
   const isZCashShieldedTransactionsEnabled = useSafeWalletSelector(
     WalletSelectors.isZCashShieldedTransactionsEnabled,
@@ -304,9 +305,9 @@ export const SendScreen = React.memo(() => {
     return amountWei.gt(sendAssetBalance)
   }, [sendAssetBalance, sendAmount, tokenFromParams])
 
-  const tokenColor = React.useMemo(() => {
-    return getDominantColorFromImageURL(tokenFromParams?.logo ?? '')
-  }, [tokenFromParams?.logo])
+  const tokenColor = isIOS
+    ? undefined
+    : getDominantColorFromImageURL(tokenFromParams?.logo ?? '')
 
   const needsAccountSelected =
     accountIdFromParams === undefined

components/brave_wallet_ui/page/screens/swap/swap.tsx

@@ -110,6 +110,7 @@ export const Swap = () => {
   const isPanel = useSafeUISelector(UISelectors.isPanel)
   const isMobile = useSafeUISelector(UISelectors.isMobile)
   const isMobileOrPanel = isMobile || isPanel
+  const isIOS = useSafeUISelector(UISelectors.isIOS)
   const isKeyboardVisible = useIsKeyboardVisible()
 
   // Refs
@@ -137,10 +138,10 @@ export const Swap = () => {
     showPrivacyModal,
   )
 
-  // Memos
-  const tokenColor = React.useMemo(() => {
-    return getDominantColorFromImageURL(toToken?.logo ?? '')
-  }, [toToken?.logo])
+  // Computed
+  const tokenColor = isIOS
+    ? undefined
+    : getDominantColorFromImageURL(toToken?.logo ?? '')
 
   // render
   return (