Should Instrumentation Key (instead of Connecting String) of an App Insight still be used in App service?

Nobody has claimed this yet.

[Web App with App Insight sample](https://github.com/Azure/azure-quickstart-templates/blob/master/quickstarts/microsoft.web/web-app-loganalytics/main.bicep#L57)

### Issue Details
I'm trying to look for a simple example to create a Web App with App Insights instrumentation. I found the above example, but I see that it is still using the _Instrumentation Key_. According to a [Doc](https://learn.microsoft.com/en-us/azure/azure-monitor/app/migrate-from-instrumentation-keys-to-connection-strings), it sounds like Microsoft is recommending the move to _Connection Strings_. [Searching](https://github.com/search?q=repo%3AAzure%2Fazure-quickstart-templates%20APPINSIGHTS_INSTRUMENTATIONKEY&type=code) the full repo I see 44 files with the string `APPINSIGHTS_INSTRUMENTATIONKEY`. Just wondering I should go to the _Connection String_ or stay with the _Instrumentation Key_.
 

Review the linked web-app-loganalytics/main.bicep example at line 57 and the Azure Monitor migration guidance on instrumentation keys versus connection strings. Compare the repository's 44 APPINSIGHTS_INSTRUMENTATIONKEY occurrences to determine the applicable recommendation; done means the issue has a clear answer and, if needed, identifies the affected examples for updating.

Written by the indexing model from the issue text.