CosmosDiagnostics: Fixes memory leak due to unbounded growth of CosmosDiagnosticsContextCore and removes reference to response stream.

[neildsh]

Pull Request Template

Description

NetworkAttachedDocumentContainer holds on to a single CosmosDiagnostics context, and adds diagnostics for each response to this context. for long running queries, this amounts to growing the size of CosmosDiagnostics without bound.

In addition StoreResponseStatistics was holding on the entire StoreResult object including the response stream, which leads to the very high memory consumption.

This change severs the link between StoreResponseStatistics and the StoreResult, and it also uses a bounded circular buffer instead of a list to store child contexts in CosmosDiagnosticsCore

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Closing issues

To automatically close an issue: closes #IssueNumber

[github-actions]

Please follow the required format: "[Internal] Category: (Adds|Fixes|Refactors) Description"

Examples:
Diagnostics: Adds GetElapsedClientLatency to CosmosDiagnostics
PartitionKey: Fixes null reference when using default(PartitionKey)
[v4] Client Encryption: Refactors code to external project
[Internal] Query: Adds code generator for CosmosNumbers for easy additions in the future.

[github-actions]

Please follow the required format: "[Internal] Category: (Adds|Fixes|Refactors) Description"

Examples:
Diagnostics: Adds GetElapsedClientLatency to CosmosDiagnostics
PartitionKey: Fixes null reference when using default(PartitionKey)
[v4] Client Encryption: Refactors code to external project
[Internal] Query: Adds code generator for CosmosNumbers for easy additions in the future.

All good!

[ealsur]

Please check the comments about thread-safety and the Region public API change