[apache#6030] fix(CLI): Fix Setting the same tags multiple times in t…

…he Gravitino CLi gives unexpected output (apache#6037)

### What changes were proposed in this pull request?

Fix the error information when Setting the same tags multiple times in
the Gravitino CLi. now a hint information is given when the tag is set
repeatedly

### Why are the changes needed?

Fix: apache#6030 

### Does this PR introduce _any_ user-facing change?

NO

### How was this patch tested?

```bash
gcli tag set --metalake demo_metalake --name Hive_catalog --tag tagB tagC
# Hive_catalog now tagged with tagB,tagC

gcli tag set --metalake demo_metalake --name Hive_catalog --tag tagB tagC
# [tagB, tagC] are(is) already associated with Hive_catalog
```

clients/cli/src/main/java/org/apache/gravitino/cli/commands/TagEntity.java

@@ -29,6 +29,7 @@
 import org.apache.gravitino.exceptions.NoSuchMetalakeException;
 import org.apache.gravitino.exceptions.NoSuchSchemaException;
 import org.apache.gravitino.exceptions.NoSuchTableException;
+import org.apache.gravitino.exceptions.TagAlreadyAssociatedException;
 import org.apache.gravitino.rel.Table;
 
 public class TagEntity extends Command {
@@ -94,6 +95,8 @@ public void handle() {
       exitWithError(ErrorMessages.UNKNOWN_SCHEMA);
     } catch (NoSuchTableException err) {
       exitWithError(ErrorMessages.UNKNOWN_TABLE);
+    } catch (TagAlreadyAssociatedException err) {
+      exitWithError("Tags are already associated with " + name.getName());
     } catch (Exception exp) {
       exitWithError(exp.getMessage());
     }