fix: set initial size fill full screen

Author: okwasniewski

.changeset/all-dryers-study.md

@@ -0,0 +1,5 @@
+---
+'react-native-bottom-tabs': patch
+---
+
+fix: set initial size to full screen

packages/react-native-bottom-tabs/src/TabView.tsx

@@ -198,8 +198,8 @@ const TabView = <Route extends BaseRoute>({
   const customTabBarWrapperRef = useRef<View>(null);
   const [tabBarHeight, setTabBarHeight] = React.useState<number | undefined>(0);
   const [measuredDimensions, setMeasuredDimensions] = React.useState<
-    { width: number; height: number } | undefined
-  >();
+    { width: number | string; height: number | string } | undefined
+  >({ width: '100%', height: '100%' });
 
   const trimmedRoutes = React.useMemo(() => {
     if (