Clear Search Input After Entering It

Summary: per title

Reviewed By: nikoant

Differential Revision: D19143025

fbshipit-source-id: b371a55584b255b8f0a704eaa46e6a3eebad4a79

src/ui/components/searchable/Searchable.tsx

@@ -306,6 +306,7 @@ const Searchable = (
         this.removeFilter(this.state.focusedToken);
       } else if (e.key === 'Enter' && this.hasFocus() && this._inputRef) {
         this.matchTags(this._inputRef.value, true);
+        this.setState({searchTerm: ''});
       }
     };