small fix to rate status update (#2967)

Small fix to update code for rate limiting status.

Release Notes (Preview only)
- Fixed update to only stop updating status, when the rate limit is
reset to None

crates/search/src/project_search.rs

@@ -701,8 +701,9 @@ impl ProjectSearchView {
                         }));
                     return;
                 }
+            } else {
+                semantic_state.maintain_rate_limit = None;
             }
-            semantic_state.maintain_rate_limit = None;
         }
     }