fix: don't cache server side route tree during dev (#6650)

fixes #6556
fixes #6559
fixes #6640

Author: schiller-manuel

packages/router-core/src/router.ts

@@ -1070,6 +1070,7 @@ export class RouterCore<
       let processRouteTreeResult: ProcessRouteTreeResult<TRouteTree>
       if (
         (isServer ?? this.isServer) &&
+        process.env.NODE_ENV !== 'development' &&
         globalThis.__TSR_CACHE__ &&
         globalThis.__TSR_CACHE__.routeTree === this.routeTree
       ) {
@@ -1082,6 +1083,7 @@ export class RouterCore<
         // only cache if nothing else is cached yet
         if (
           (isServer ?? this.isServer) &&
+          process.env.NODE_ENV !== 'development' &&
           globalThis.__TSR_CACHE__ === undefined
         ) {
           globalThis.__TSR_CACHE__ = {