.NET: chore: support retries on Cosmos storage creation (#402)

* support retries

* tests + registration options

* fix ordering ..

* HK + update packages

* fix paths

* Update dotnet/tests/CosmosDB.IntegrationTests/Microsoft.Extensions.AI.Agents.Runtime.Storage.CosmosDB.Tests/CosmosTestFixture.cs

* re create project and fix some pk usage

* fix all tests

* try workflow?

* wip 1

* fix definition

* try with cosmos_use_emulator env?

* try ignore SSL errors?

* other cert verifications

* hardcode to 8081?

* proper valuation of ENV

* logging

* ensure db exsists for CI

* bump

* cleanup

* fix usage

* nit comment

* try only release for stability?

* try skip some flaky tests

* merge fixes + rollback container

* reimplement with iasyncdisposable pattern

* remove example doc struct

dotnet/samples/AgentWebChat/AgentWebChat.AppHost/AgentWebChat.AppHost.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <Sdk Name="Aspire.AppHost.Sdk" Version="9.3.1" />
+  <Sdk Name="Aspire.AppHost.Sdk" Version="$(AspireAppHostSdkVersion)" />
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>