Enable React Native strict TypeScript API (#11459)

src/alf/util/useColorModeTheme.ts

@@ -24,7 +24,7 @@ export function useThemeName(): ThemeName {
 }
 
 function getThemeName(
-  colorScheme: ColorSchemeName,
+  colorScheme: ColorSchemeName | null | undefined,
   colorMode: 'system' | 'light' | 'dark',
   darkTheme?: ThemeName,
 ) {
@@ -39,11 +39,8 @@ function getThemeName(
 }
 
 function updateDocument(theme: ThemeName) {
-  // @ts-ignore web only
   if (IS_WEB && typeof window !== 'undefined') {
-    // @ts-ignore web only
     const html = window.document.documentElement
-    // @ts-ignore web only
     const meta = window.document.querySelector('meta[name="theme-color"]')
 
     // remove any other color mode classes