Identity UI fix razor content (#36479)

* Try to fix razor content

* Update src/Identity/UI/src/Microsoft.AspNetCore.Identity.UI.csproj

Co-authored-by: Pranav K <[email protected]>

Co-authored-by: Pranav K <[email protected]>

Author: HaoK

src/Identity/UI/src/Areas/Identity/Pages/V5/Account/Login.cshtml

@@ -67,7 +67,7 @@
                     <form id="external-account" asp-page="./ExternalLogin" asp-route-returnUrl="@Model.ReturnUrl" method="post" class="form-horizontal">
                         <div>
                             <p>
-                                @foreach (var provider in Model.ExternalLogins!)
+                                @foreach (var provider in Model.ExternalLogins)
                                 {
                                     <button type="submit" class="btn btn-primary" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.DisplayName</button>
                                 }

src/Identity/UI/src/Microsoft.AspNetCore.Identity.UI.csproj

@@ -23,6 +23,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Content Update="**\*.cshtml" Pack="false" />
     <None Include="build\*" Pack="true" PackagePath="build\" />
     <None Include="buildMultiTargeting\*" Pack="true" PackagePath="buildMultiTargeting\" />
     <None Include="buildTransitive\*" Pack="true" PackagePath="buildTransitive\" />