Microsoft.Extensions.Http.Resilience is raising trim/AOT warnings in published app

When When analyzing the Microsoft.Extensions.Http.Resilience library using the AOT IlcCompiler, we get the following warnings:

```
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.WeightedGroupsRoutingOptions.Groups: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.WeightedGroupsRoutingOptions.Groups: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.UriEndpointGroup.Endpoints: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.UriEndpointGroup.Endpoints: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.OrderedGroupsRoutingOptions.Groups: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
ILC : Trim analysis error IL2026: Microsoft.Extensions.Http.Resilience.OrderedGroupsRoutingOptions.Groups: Using member 'System.ComponentModel.DataAnnotations.LengthAttribute.LengthAttribute(Int32,Int32)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Uses reflection to get the 'Count' property on types that don't implement ICollection. This 'Count' property may be trimmed. Ensure it is preserved. [D:\git\extensions\test\Libraries\Microsoft.Extensions.AotCompatibility.TestApp\Microsoft.Extensions.AotCompatibility.TestApp.csproj]
```

These warnings are currently being suppressed from the Roslyn analyzers using `#pragma`:

https://github.com/dotnet/extensions/blob/3f1f59cd52c58ab7e5666ba4c8ea6176f606f3d7/src/Libraries/Microsoft.Extensions.Http.Resilience/Routing/OrderedGroupsRoutingOptions.cs#L22-L31

However, suppressioning like this doesn't suppress the warning when used in an actual AOT application.

I believe the suppressions are valid, in these cases, because the property being validated is an `ICollection`, so reflection won't be used when validating the length.

I think we should reopen https://github.com/dotnet/extensions/pull/5305 or make some sort of similar change.

cc @martincostello @MichalStrehovsky