Regression in skwasm benchmarks

[zanderso]

SkiaPerf flagged some regressions in skwasm benchmarks last week.

https://flutter-flutter-perf.skia.org/e/?begin=1707761887&end=1709659446&keys=Xccd896008d9cebd528f259c8c18ce490&requestType=0&selected=commit%3D39546%26name%3D%252Carch%253Dintel%252Cbranch%253Dmaster%252Cconfig%253Ddefault%252Cdevice_type%253Dnone%252Cdevice_version%253Dnone%252Chost_type%253Dlinux%252Csub_result%253Dbench_material3_scroll_semantics.skwasm.drawFrameDuration.average%252Ctest%253Dweb_benchmarks_skwasm%252C&xbaroffset=39546

On #144208

Maybe? flutter/engine#50928 cc @eyebrowsoffire

[eyebrowsoffire]

Duplicate of #144254

[github-actions]

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