[Group 3] Enable nullable annotations for `Microsoft.Extensions.Logging` (#65262)

[Group 3] Enable nullable annotations for `Microsoft.Extensions.Logging` (#65262)

* First pass

* Second pass

* Pass three

* Missed few things

* ref

* Update ProviderAliasUtilities.cs

* Update ActivityTrackingOptions.cs

* Update Microsoft.Extensions.Logging.cs

* GetRequiredService

* Update Logger.Scope

* Create CompatibilitySuppressions.xml

* Add comment to CompatibilitySuppressions.xml

Co-authored-by: Jose Perez Rodriguez <joperezr@microsoft.com>
* Delete CompatibilitySuppressions.xml

* AsyncLocal<Scope?> _currentScope

* Add assert

Co-authored-by: Jose Perez Rodriguez <joperezr@microsoft.com>