fix(incognito): Ensures that incognito doesn't clear cookies when not enabled (#1447 by @jasonkellydk)

Co-authored-by: Jason Kelly <jason.kelly@isobar.com>
Co-authored-by: Jamon Holmgren <jamonholmgren@gmail.com>
Co-authored-by: Jason Safaiyeh <safaiyeh@protonmail.com>

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewManager.java

 
   @ReactProp(name = "incognito")
   public void setIncognito(WebView view, boolean enabled) {
+    // Don't do anything when incognito is disabled
+    if (!enabled) {
+      return;
+    }
+
     // Remove all previous cookies
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
       CookieManager.getInstance().removeAllCookies(null);
 
     // Disable caching
     view.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
-    view.getSettings().setAppCacheEnabled(!enabled);
+    view.getSettings().setAppCacheEnabled(false);
     view.clearHistory();
-    view.clearCache(enabled);
+    view.clearCache(true);
 
     // No form data or autofill enabled
     view.clearFormData();
-    view.getSettings().setSavePassword(!enabled);
-    view.getSettings().setSaveFormData(!enabled);
+    view.getSettings().setSavePassword(false);
+    view.getSettings().setSaveFormData(false);
   }
 
   @ReactProp(name = "source")