Auto-hide aliases to prevent recursion (#4487)

crates/nu-parser/src/parser.rs

@@ -851,7 +851,10 @@ pub fn parse_call(
                     new_spans.extend(&spans[(pos + 1)..]);
                 }
 
+                working_set.enter_scope();
+                working_set.hide_alias(&name);
                 let (mut result, err) = parse_expression(working_set, &new_spans, false);
+                working_set.exit_scope();
 
                 result.replace_span(working_set, expansion_span, orig_span);