Add tight lineHeight descender example to TextExample.android.js (#57223)

Summary:
Pull Request resolved: #57223

Adds a `gjpqy` example to the Text > lineHeight RNTester section that exercises `fontSize: 24, lineHeight: 24`. Pure example addition for the upcoming `CustomLineHeightSpan` descender-clipping fix, providing the surface for a jest-e2e screenshot regression test.

Changelog:
[Internal]

Reviewed By: cortinico

Differential Revision: D108409230

fbshipit-source-id: acd97a92e6970e29b1a04090d14976336cdc4b37

Author: javache

packages/rn-tester/js/examples/Text/TextExample.android.js

@@ -1119,6 +1119,19 @@ function LineHeightExample(props: {}): React.Node {
         <RNTesterText style={{fontSize: 20}}>Continually</RNTesterText> expedite
         magnetic potentialities rather than client-focused interfaces.
       </RNTesterText>
+      <RNTesterText
+        style={[
+          {
+            fontSize: 24,
+            lineHeight: 24,
+            borderColor: 'black',
+            borderWidth: 1,
+          },
+          styles.wrappedText,
+        ]}
+        testID="line-height-matches-font-size-descenders">
+        gjpqy
+      </RNTesterText>
       <RNTesterText
         style={[
           {