[#7686] improvement(client-java): Correct URL encode path in alterModelVersion in GenericModelCatalog.java (#7694)

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

The cherry-pick conflicts were successfully resolved by manually

### Why are the changes needed?


Close: #7686

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

None

### How was this patch tested?

using the client-java module's tests.

Author: su8y

clients/client-java/src/main/java/org/apache/gravitino/client/GenericModelCatalog.java

@@ -329,7 +329,9 @@ public ModelVersion alterModelVersion(
     NameIdentifier modelFullIdent = modelFullNameIdentifier(ident);
     ModelVersionResponse resp =
         restClient.put(
-            formatModelVersionRequestPath(modelFullIdent) + "/aliases/" + alias,
+            formatModelVersionRequestPath(modelFullIdent)
+                + "/aliases/"
+                + RESTUtils.encodeString(alias),
             req,
             ModelVersionResponse.class,
             Collections.emptyMap(),