Suppress v7 warnings in production build (#12794)

* Suppress v7 warnings in production build (#12509)

* Don't log v7 deprecation warnings in prod builds

---------

Co-authored-by: Pavel <[email protected]>

Author: brophdawg11

.changeset/big-lamps-remain.md

@@ -0,0 +1,7 @@
+---
+"react-router-dom": patch
+"react-router": patch
+"@remix-run/router": patch
+---
+
+Do not log v7 deprecation warnings in production builds

contributors.yml

@@ -215,6 +215,7 @@
 - petersendidit
 - promet99
 - pyitphyoaung
+- rakleed
 - refusado
 - rimian
 - robbtraister

packages/react-router/lib/deprecations.ts

@@ -4,7 +4,7 @@ import type { FutureConfig as RenderFutureConfig } from "./components";
 const alreadyWarned: { [key: string]: boolean } = {};
 
 export function warnOnce(key: string, message: string): void {
-  if (!alreadyWarned[message]) {
+  if (__DEV__ && !alreadyWarned[message]) {
     alreadyWarned[message] = true;
     console.warn(message);
   }