The Select Tag Helper not select an empty value when the property is null

Is there an existing issue for this?

[X] I have searched the existing issues

Describe the bug

The Select Tag Helper not select an empty value when Reason is null for the following model:

public sealed record DisableEmployee(string Name, [Required] EmployeeDisabledReason? Reason, DateTime EffectiveDate);

Definition of EmployeeDisabledReason:

public enum EmployeeDisabledReason
{
    Resigned = 0,
}

View:

<select id="disable-reason" class="form-select" asp-for="Reason" asp-items="Html.GetEnumSelectList<EmployeeDisabledReason>()">
  <option value="" disabled>Select a reason</option>
</select>

Result HTML:

<select id="disable-reason" class="form-select" name="Reason">
  <option value="" disabled="">Select a reason</option>
  <option value="0">Resigned</option>
</select>

Expected Behavior

I expect the first option that have the empty value have selected attribute applied. e.g.:

<select id="disable-reason" class="form-select" name="Reason">
  <option value="" selected="" disabled="">Select a reason</option>
  <option value="0">Resigned</option>
</select>

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

6.0.102

Anything else?

.NET SDK (reflecting any global.json):
 Version:   6.0.102
 Commit:    49861cb924

Runtime Environment:
 OS Name:     arch
 OS Version:  
 OS Platform: Linux
 RID:         arch-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.102/

Host (useful for support):
  Version: 6.0.2
  Commit:  839cdfb0ec

.NET SDKs installed:
  6.0.102 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.20 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.2 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.20 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.2 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

dotnet / aspnetcore

The Select Tag Helper not select an empty value when the property is null #41803