[yodel] Make fuzzing timeouts much more lenient (#36853)

Fixes a fuzzing found "bug" in chaotic-good transport stress tests.

Built on #36848

Closes #36853

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36853 from ctiller:f-cg2 96d663f838
PiperOrigin-RevId: 641299634

test/core/call/yodel/yodel_test.cc

@@ -130,7 +130,8 @@ class YodelTest::WatchDog {
  private:
   YodelTest* const test_;
   grpc_event_engine::experimental::EventEngine::TaskHandle const timer_{
-      test_->state_->event_engine->RunAfter(Duration::Minutes(5),
+      test_->state_->event_engine->RunAfter(
+          g_yodel_fuzzing ? Duration::Hours(24) : Duration::Minutes(5),
           [this]() { test_->Timeout(); })};
 };