Fix bug with BlobStorage in local environment not using KeyedService

[BlueBasher]

Summary & Motivation

With the upgrade to a newer version of .NET, a bug was exposed in the PlatformPlatform code, specifically affecting the avatars blob storage setup. The issue surfaced because the BlobStorage account was registered as a normal service rather than a keyed service in the local environment configuration (when not running in Azure). While this was not a problem in the previous .NET version, the upgrade made the bug evident. This PR resolves the issue by registering the BlobStorage account as a keyed service in the local environment, aligning the behavior with the intended configuration and fixing the bug in PlatformPlatform.

Checklist

• [x] I have added a Label to the pull-request
• [x] I have added tests, and done manual regression tests
• [x] I have updated the documentation, if necessary

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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