azure-sdk-for-net: [BUG] UploadAsync with BlobRequestConditions fails criteria if providing a RetriableStreamImpl

Describe the bug

Demonstration @ https://github.com/seankearney/azure-storage-sdk-tag-conditions-bug

When a blob is downloaded from storage and then that Stream (Azure.Core.Pipeline.RetriableStream.RetriableStreamImpl) is provided to a subsequent Upload call, the upload will fail if there are BlobRequestConditions.

We’ve discovered a work around where if we copy the Azure.Core.Pipeline.RetriableStream.RetriableStreamImpl to a MemoryStream it will work as expected.

Expected behavior

In this scenario, where we don’t have an existing blob, I would expect to be able to have the blob created given a Stream from a previous DownloadAsync call.

Actual behavior (include Exception or Stack Trace)

Azure.RequestFailedException : The condition specified using HTTP conditional header(s) is not met.
...
Status: 412 (The condition specified using HTTP conditional header(s) is not met.)
ErrorCode: ConditionNotMet

To Reproduce

See provided tests @ https://github.com/seankearney/azure-storage-sdk-tag-conditions-bug

1. Download a blob from storage
2. Use that resulting stream as the content of a new blob. As part of the upload, provide BlobUploadOptions that contains a BlobRequestConditions
3. You should notice that the blob fails to meet the conditions and isn’t persisted

Found Work Around

If the RetryableStreamImpl is copied to a MemoryStream the conditions are satisfied and the blob is persisted.

Environment:

• Visual Studio 16.9.4
• Azure.Storage.Blobs 12.8.3

.NET SDK (reflecting any global.json):
Version:   5.0.202
Commit:    db7cc87d51

Runtime Environment:
OS Name:     Windows
OS Version:  10.0.19042
OS Platform: Windows
RID:         win10-x64
Base Path:   C:\Program Files\dotnet\sdk\5.0.202\

Host (useful for support):
 Version: 5.0.5
 Commit:  2f740adc14

.NET SDKs installed:
 5.0.202 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
 Microsoft.AspNetCore.All 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
 Microsoft.AspNetCore.App 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
 Microsoft.AspNetCore.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
 Microsoft.AspNetCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
 Microsoft.NETCore.App 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
 Microsoft.NETCore.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
 Microsoft.NETCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
 Microsoft.WindowsDesktop.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
 Microsoft.WindowsDesktop.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]