Add support for ALTER COLUMN SET DATA TYPE in the Iceberg connector

Author: Nivin

presto-main-base/src/main/java/com/facebook/presto/security/FileBasedSystemAccessControl.java

@@ -258,14 +258,11 @@ public void checkCanDropSchema(Identity identity, AccessControlContext context,
         }
     }
 
-    public void checkCanAlterColumn(Identity identity, AccessControlContext context, CatalogSchemaName schema, CatalogSchemaTableName table)
+    @Override
+    public void checkCanAlterColumn(Identity identity, AccessControlContext context, CatalogSchemaTableName table)
     {
-        if (!canAccessCatalog(identity, schema.getCatalogName(), ALL)) {
-            denyAlterColumn(schema.toString());
-        }
-
-        if (!isSchemaOwner(identity, schema)) {
-            denyAlterColumn(schema.toString());
+        if (!canAccessCatalog(identity, table.getCatalogName(), ALL)) {
+            denyAlterColumn(table.toString());
         }
     }