[Consumption] `az consumption usage list`: Enhanced handling of `usageStart` and `usageEnd` when missing#31128

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kairu-ms merged 6 commits intoAzure:devfrom

haule21:fix/consumption-usage-start-none-handling

Apr 18, 2025

Commits on Mar 25, 2025

fix: handle None UsageStart in consumption usage list and exclude from results
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