Fix zoom controls contrast in topology view (#1066)

src/app/(dashboard)/dashboard/usage/components/ProviderTopology.js

@@ -304,7 +304,7 @@ export default function ProviderTopology({ providers = [], activeRequests = [],
           nodesConnectable={false}
           elementsSelectable={false}
         >
-          <Controls showInteractive={false} />
+          <Controls showInteractive={false} className="react-flow-controls-custom" />
         </ReactFlow>
       )}
     </div>