ICU-22965 Fix the problems we had with the maven deploy for ICU 76.1

The blocker was the missing `<name>` element, which is mandatory
See https://central.sonatype.org/publish/requirements/#project-name-description-and-url

The second problem was that all modules were staged, not just the three we normally publish.

Author: mihnita

icu4j/main/charset/pom.xml

@@ -13,6 +13,7 @@
   </parent>
 
   <artifactId>icu4j-charset</artifactId>
+  <name>ICU4J Charset Provider</name>
   <description>icu4j-charset is a supplemental library for icu4j, implementing Java Charset SPI.</description>
   <url>${proj.url}</url>
   <scm>

icu4j/main/icu4j/pom.xml

@@ -14,6 +14,7 @@
   </parent>
 
   <artifactId>icu4j</artifactId>
+  <name>ICU4J</name>
   <description>International Components for Unicode for Java (ICU4J) is a mature, widely used Java library
     providing Unicode and Globalization support</description>
   <url>${proj.url}</url>

icu4j/main/localespi/pom.xml

@@ -13,6 +13,7 @@
   </parent>
 
   <artifactId>icu4j-localespi</artifactId>
+  <name>ICU4J Locale Service Provider</name>
   <description>icu4j-localespi is a supplemental library for icu4j, implementing Java Locale SPI.</description>
   <url>${proj.url}</url>
   <scm>

icu4j/pom.xml

@@ -235,6 +235,9 @@
         <plugin>
           <artifactId>maven-deploy-plugin</artifactId>
           <version>3.1.3</version>
+          <configuration>
+            <skip>true</skip>
+          </configuration>
         </plugin>
         <plugin>
           <artifactId>maven-site-plugin</artifactId>