docs: clarify web environment handling in getEnvironmentInfo function

Author: Robert27

src/env.ts

@@ -40,6 +40,7 @@ export function getEnvironmentInfo(): EnvironmentInfo {
           return ["iPadOS", Platform.Version];
         }
         return ["iOS", Platform.Version];
+      // Web needs to be empty as the server computes these values using the user agent
       default:
         return ["", ""];
     }