Fix issues with enabling application insights logging

[StefanIvemo]

Overview/Summary

Fixed a typo for the secret name APPLICATIONINSIGHTS_CONNECTIONSTRING .

This PR fixes/adds/changes/removes

This PR fixes #928

Breaking Changes

N/A

Testing Evidence

N/A

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant issues, for tracking and closure.
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.

[Copilot]

Pull Request Overview

This PR fixes a typo in an environment variable name used for Application Insights logging configuration. The variable name was incorrectly using underscores as APPLICATIONINSIGHTS_CONNECTION_STRING instead of the correct APPLICATIONINSIGHTS_CONNECTIONSTRING.

• Fixed environment variable name typo for Application Insights connection string

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[Jefajers]

Ah good catch @StefanIvemo 🥇.