[test] Make test compatible with numfuzz

The test is incompatible with --noenable-sse4-1, which is randomly
added by numfuzz (and possibly other fuzzers).

The "Flags" from the test files are always passed last and are often
used to neuter incompatible flags.

Bug: v8:10863
Change-Id: I8fd11b4d38586f25f5af63ab8ef83873dc250557
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2389982Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69665}

test/mjsunit/regress/wasm/regress-10831.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --experimental-wasm-simd
+// Flags: --experimental-wasm-simd --enable-sse4-1
 
 load('test/mjsunit/wasm/wasm-module-builder.js');