fix(wallet): Fix Custom Fee Rate Flow

Updates min/max condition in onContinue method for the custom fee rate flow.

Author: coreyphillips

src/screens/Wallets/Send/FeeCustom.tsx

@@ -63,15 +63,15 @@ const FeeCustom = ({
 	};
 
 	const onContinue = (): void => {
-		if (feeRate > maxFee) {
+		if (Number(feeRate) > maxFee) {
 			showToast({
 				type: 'info',
 				title: t('max_possible_fee_rate'),
 				description: `${maxFee} ${t('sats_per_vbyte')}`,
 			});
 			return;
 		}
-		if (minFee < maxFee) {
+		if (Number(feeRate) < minFee) {
 			showToast({
 				type: 'info',
 				title: t('min_possible_fee_rate'),