Support uploads larger than 250 MB in SharePoint / Microsoft Graph APIs

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Summary
SharePoint ingestion scenarios that rely on Microsoft Graph or SharePoint APIs are effectively constrained by a ~250 MB upload limit. This limitation blocks common enterprise workflows that depend on automated, API‑based ingestion of large files.

Problem
Many real‑world enterprise artifacts routinely exceed 250 MB, including (but not limited to):

• PST and mailbox exports
• Teams and SharePoint exports
• eDiscovery and compliance evidence
• Forensic artifacts and archives

When using SharePoint / Microsoft Graph APIs, these files cannot be ingested without artificial file splitting or unsupported workarounds.

Impact
This limitation:

• Breaks automated and headless ingestion workflows
• Forces manual or error‑prone file segmentation
• Increases operational complexity and risk
• Prevents adoption of API‑first architectures
• Is misaligned with modern Microsoft 365 data sizes and enterprise use cases

Expected Behavior
SharePoint and Microsoft Graph upload APIs should support large‑file ingestion through one or more supported approaches, such as:

• Higher or configurable upload size limits
• Fully supported chunked or multipart uploads
• Storage‑backed ingestion patterns consistent with DriveItem upload sessions

Why This Matters
This is not an edge case. Large‑file ingestion is a standard enterprise requirement across compliance, investigation, migration, and archival scenarios. The current 250 MB limit significantly reduces the viability of SharePoint APIs for these workloads.

Request
Increase or remove the 250 MB upload limit for SharePoint / Microsoft Graph upload APIs, or provide a supported large‑file ingestion mechanism suitable for enterprise‑scale workloads.