[numfuzz] Enable feedback-vector-budget flag again.

Bug seems to not reproduce anymore as shown by:
https://chromium-review.googlesource.com/c/v8/v8/+/3302803/1

No-Try: true
Bug: v8:10243
Change-Id: Ic892b2c08d917f805ab6893e9dba86d112790abc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3302803
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78109}

tools/testrunner/testproc/fuzzer.py

@@ -13,8 +13,7 @@ from . import base
 EXTRA_FLAGS = [
   (0.1, '--always-opt'),
   (0.1, '--assert-types'),
-  # TODO(mythria): https://crbug.com/v8/10243
-  # (0.1, '--budget-for-feedback-vector-allocation=0'),
+  (0.1, '--budget-for-feedback-vector-allocation=0'),
   (0.1, '--cache=code'),
   (0.1, '--force-slow-path'),
   (0.2, '--future'),