[test] Speculatively skip slow test on arm64

This is the longest running test on arm64, possibly contributing to a timeout:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20debug/13906

Temporarily disabling it until there's a better solution for arm64 timeouts.

Bug: v8:7783
Change-Id: Ia5755c7d0e09a64e607345a3a3185a6e86832939
R=leszeks@chromium.org

NOTRY=true

Change-Id: Ia5755c7d0e09a64e607345a3a3185a6e86832939
Reviewed-on: https://chromium-review.googlesource.com/c/1369956Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58133}

test/cctest/cctest.status

@@ -166,6 +166,7 @@
   'test-api/ExternalFloatArray': [SKIP],
   'test-api/Float32Array': [SKIP],
   'test-api/Float64Array': [SKIP],
+  'test-api/Uint8Array': [SKIP],
 }],  # 'arch == arm64 and (mode == debug or dcheck_always_on) and simulator_run'
 
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