[Bug] Default template missing information about enums

[nirinchev]

Describe the bug
When using the default template, enum documentation is missing the <remarks> section as well as information about any [Obsolete] members.

To Reproduce
Steps to reproduce the behavior:

1. Define an enum with obsolete members and/or <remarks> section:

   public enum MyEnum
   {
       /// <summary>
       /// This is a regular enum value.
       /// </summary>
       /// <remarks>
       /// This is a remarks section. Very important remarks about Value go here.
       /// </remarks>
       Value,
   
       /// <summary>
       /// This is old and unused. You shouldn't use it anymore.
       /// </summary>
       /// <remarks>
       /// Don't use this, seriously! Use Value instead.
       /// </remarks>
       [Obsolete("Use Value")]
       OldAndUnusedValue
   }

2. Generate API docs using the default template:

       "template": [
           "default"
       ],

Expected behavior
I would expect the generated page to include the <remarks> section as well as display somehow that the OldAndUnusedValue is obsolete, similarly to how it's done for classes.

Screenshots

This is the generated page for MyEnum - as you can see, there's no indication which members are obsolete. The text of the <remarks> section is also missing.

For comparison, this is the page generated for a class with similar members:

Context:

• Browser: Safari
• Form factor: Desktop
• Docfx version: 2.70.4
• Template: default

Additional context
I've attached a sample project that reproduces the problem. To generate the API docs, run docfx docfx_project/docfx.json --serve.

DocfxEnums.zip