Bug 1873019 - Remove dependency from useEffect in LanguageSwitcher causing infinite re-renders r=omc-reviewers,Mardak,aminomancer

Temporarily remove screenIndex dependency from useEffect which is causing infinite re-renders and ultimately an unresponsive browser (likely because every time filtered screen is changing, it updates [screens as well](https://searchfox.org/mozilla-central/source/browser/components/aboutwelcome/content-src/components/MultiStageAboutWelcome.jsx#206) ). This is a quick fix to get into beta uplift.

Differential Revision: https://phabricator.services.mozilla.com/D198302

Author: mimizillaa

browser/components/aboutwelcome/content-src/components/LanguageSwitcher.jsx

@@ -134,12 +134,13 @@ export function useLanguageSwitcher(
         setLanguageFilteredScreens(screens);
       }
     },
+    // Removing screenIndex as a dependency as it's causing infinite re-renders (1873019)
+    // eslint-disable-next-line react-hooks/exhaustive-deps
     [
       appAndSystemLocaleInfo?.matchType,
       languageMismatchScreenIndex,
       negotiatedLanguage,
       screen,
-      screenIndex,
       screens,
       setScreenIndex,
     ]

browser/components/aboutwelcome/content/aboutwelcome.bundle.js

@@ -1557,7 +1557,10 @@ function useLanguageSwitcher(appAndSystemLocaleInfo, screens, screenIndex, setSc
     } else {
       setLanguageFilteredScreens(screens);
     }
-  }, [appAndSystemLocaleInfo?.matchType, languageMismatchScreenIndex, negotiatedLanguage, screen, screenIndex, screens, setScreenIndex]);
+  },
+  // Removing screenIndex as a dependency as it's causing infinite re-renders (1873019)
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  [appAndSystemLocaleInfo?.matchType, languageMismatchScreenIndex, negotiatedLanguage, screen, screens, setScreenIndex]);
   return {
     negotiatedLanguage,
     langPackInstallPhase,