Simplify one of the puzzles to make it faster with Centipede.

Without this FuzzTest/Centipede would spend a lot of time in ser/deserializing the inputs, which is not what we wanted to test using the puzzles.

PiperOrigin-RevId: 596943326

e2e_tests/testdata/fuzz_tests_for_microbenchmarking.cc

diff --git a/e2e_tests/testdata/fuzz_tests_for_microbenchmarking.cc b/e2e_tests/testdata/fuzz_tests_for_microbenchmarking.cc
index 8b517d9..cdb0ed5 100644
--- a/e2e_tests/testdata/fuzz_tests_for_microbenchmarking.cc
+++ b/e2e_tests/testdata/fuzz_tests_for_microbenchmarking.cc
@@ -218,7 +218,9 @@
     std::abort();
   }
 }
-FUZZ_TEST(MySuite, VectorValue);
+FUZZ_TEST(MySuite, VectorValue)
+    .WithDomains(
+        fuzztest::VectorOf(fuzztest::Arbitrary<char>()).WithMaxSize(20));
 
 constexpr auto& FixedSizeVectorValue = VectorValue;
 FUZZ_TEST(MySuite, FixedSizeVectorValue)