Make the error details helpful when executing 'Overwrite' action in one attached blob container with SAS permissions (List, Create)

Storage Explorer Version: 1.20.0-dev
Build Number: 20210526.7
Branch: main
Platform/OS: Windows 10/ Linux Ubuntu 18.04/ MacOS Big Sur 11.3
Architecture: ia32/x64
How Found: From running test case
Regression From: Not a regression

Bug Description

When executing 'Overwrite' action in one SAS attached blob container with permissions 'List, Create'/'List, Read, Create', display 'error: UnexpectedCancel' both in the activity log and Error Details dialog.

Steps to Reproduce

1. Select and right click one blob container -> Click 'Get Shared Access Signature... '.
2. Select permissions 'List, Create' to create a SAS -> Copy the SAS.
3. Attach the blob container with the SAS.
4. Upload one blob to the SAS attached blob container -> Upload the blob again.
5. Check whether there is a helpful error in the activity log and Error Details dialog.

Expected Experience

There is a helpful error.

Actual Experience

There is no helpful error. Display 'error: UnexpectedCancel'.

Additional Context

Here is the AzCopy Log:
ae7d78d6-0c69-0943-782b-072c1c02ebed.log

Reproduce the overwrite flow using a blob container attached with a SAS granting List and Create, following the listed steps. Start by reading the linked AzCopy log and compare it with the activity log and Error Details dialog; done means the UnexpectedCancel result is replaced by a helpful error in both places.