fix: === is more idiomatic

Author: calebchiam

src/use-wake-lock.ts

@@ -56,7 +56,7 @@ export const useWakeLock = ({
   );
 
   const release = React.useCallback(async () => {
-    const isWakeLockUndefined = wakeLock.current == null;
+    const isWakeLockUndefined = wakeLock.current === null;
     if (!isSupported) {
       return warn(
         "Calling the `release` function has no effect, Wake Lock Screen API isn't supported"
@@ -73,7 +73,7 @@ export const useWakeLock = ({
   React.useEffect(() => {
     if (reacquireOnPageVisible) {
       const handleVisibilityChange = async () => {
-        if (wakeLock.current == null && document.visibilityState === 'visible') {
+        if (wakeLock.current === null && document.visibilityState === 'visible') {
           try {
             wakeLock.current = await navigator.wakeLock.request('screen');
           } catch (error: any) {