ResizeHandle_DraggingWidensColumn_AndSurvivesReload called page.ReloadAsync()
immediately after the resize drag, racing the asynchronous persist: pointer-up
fires a fire-and-forget JS→.NET OnColumnResized invoke that round-trips back
through JS interop to write sessionStorage. When the reload won the race the
restored grid fell back to the default column width and the test failed
(~1 in 3 runs).
Wait for auditGrid:columnWidths to land via the existing WaitForStorageKeyAsync
helper before reloading — the same guard the sibling
ColumnOrderAndWidths_PersistAcrossReload_ViaSessionStorage test already uses.
Verified: 6/6 consecutive passes.
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