fix(experimental elaborator): Clear generics after elaborating type a…

…liases (#5136)

# Description

## Problem\*

## Summary\*

Adds a missed call to `generics.clear()`

## Additional Context



## Documentation\*

Check one:
- [x] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[For Experimental Features]** Documentation to be submitted in a
separate PR.

# PR Checklist\*

- [x] I have tested the changes locally.
- [x] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.

compiler/noirc_frontend/src/elaborator/mod.rs

@@ -1147,6 +1147,7 @@ impl<'context> Elaborator<'context> {
         self.current_item = Some(DependencyId::Alias(alias_id));
         let typ = self.resolve_type(alias.type_alias_def.typ);
         self.interner.set_type_alias(alias_id, typ, generics);
+        self.generics.clear();
     }
 
     fn collect_struct_definitions(&mut self, structs: BTreeMap<StructId, UnresolvedStruct>) {