Fix flaky Form 1-Z history test due to filesystem ordering and empty summaryInfoOffering

[Copilot]

The test should store offering summaries as history was non-deterministically failing because readdirSync returns files in filesystem order (not alphabetical), and the first file encountered with summaryInfoOffering contained a self-closing XML tag <summaryInfoOffering/>, which xml2js parses as [""].

The old condition summaryInfoOffering.length > 0 matched this (length=1), but processOfferingSummaries correctly skips non-object entries — so nothing was saved and histories.length was always 0.

Fix

Changed the test guard condition to check for actual object entries:

// Before
form1Z.formData.summaryInfoOffering.length > 0

// After
form1Z.formData.summaryInfoOffering.some((item) => typeof item === "object" && item !== null)

This skips files where summaryInfoOffering contains only empty/self-closing XML entries and advances to a file with real summary data.

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