Restore Automatic-Module-Name for guava-android. I accidentally dropped this when importing the PR to convert guava-jre to a full module.

Fixes #7813

RELNOTES=Restored `Automatic-Module-Name` for `guava-android`. I accidentally dropped this when importing the PR to convert `guava-jre` to a full module.
PiperOrigin-RevId: 761093831

Author: cpovirk

android/guava/pom.xml

@@ -62,6 +62,13 @@
       </plugin>
       <plugin>
         <artifactId>maven-jar-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifestEntries>
+              <Automatic-Module-Name>com.google.common</Automatic-Module-Name>
+            </manifestEntries>
+          </archive>
+        </configuration>
       </plugin>
       <plugin>
         <extensions>true</extensions>