Make relevant TextInput examples not depend on top window size (#44517)

Summary:
Pull Request resolved: #44517

# Changelog:
[Internal] -

A follow-up to #44505, turns out this is also an issue for TextInput examples, which work of assumption of some of the text input fields being of limited width, but in practice growing to occupy the parent window width, which can be quite large on platforms different from the classic mobile ones.

This diff makes the corresponding tests more practical, not expanding to the parent window anymore.

Reviewed By: christophpurrer

Differential Revision: D57196308

fbshipit-source-id: 7018e8c51adb70fe6a03e50d71eff9ba997fd07a

packages/rn-tester/js/examples/TextInput/TextInputExample.android.js

@@ -145,6 +145,9 @@ const styles = StyleSheet.create({
   singleLineWithHeightTextInput: {
     height: 30,
   },
+  wrappedText: {
+    maxWidth: 300,
+  },
 });
 
 const examples: Array<RNTesterModuleExample> = [
@@ -380,7 +383,7 @@ const examples: Array<RNTesterModuleExample> = [
     platform: 'android',
     render: function (): React.Node {
       return (
-        <View>
+        <View style={styles.wrappedText}>
           <ExampleTextInput
             numberOfLines={2}
             multiline={true}
@@ -409,7 +412,7 @@ const examples: Array<RNTesterModuleExample> = [
     title: 'Auto-expanding',
     render: function (): React.Node {
       return (
-        <View>
+        <View style={styles.wrappedText}>
           <AutogrowingTextInputExample
             enablesReturnKeyAutomatically={true}
             returnKeyType="done"