fix: type TabBarIcon color as ColorValue

Expo Router's Tabs on SDK 56 passes ColorValue to tabBarIcon, which
broke typechecking of generated tabs projects against the base
TabBarIcon's color: string prop. Align it with the NativewindUI
TabBarIcon, which already made this change for SDK 56;
@expo/vector-icons accepts string | OpaqueColorValue so ColorValue fits
both Expo Router and React Navigation callers.

Author: danstepanov

cli/src/templates/base/components/TabBarIcon.tsx.ejs

@@ -1,9 +1,9 @@
 import FontAwesome from '@expo/vector-icons/FontAwesome';
-import { StyleSheet } from 'react-native';
+import { ColorValue, StyleSheet } from 'react-native';
 
 export const TabBarIcon = (props: {
   name: React.ComponentProps<typeof FontAwesome>['name'];
-  color: string;
+  color: ColorValue;
 }) => {
   return <FontAwesome size={28} style={styles.tabBarIcon} {...props} />;
 };