`Use explicit type instead of 'var'` emitted on enum value assignment

### Version Used

Compiler: 4.12.0-3.24470.4 (d799b056)
.NET: 9.0.100-rc.1.24452.12
Visual Studio Code: 1.93.1, `38c31bc77e0dd6ae88a4e9cc93428cc27a56ba40`, x64
C# Extension: v2.49.25
C# Dev Kit Extension: v1.11.11

### Steps to Reproduce

1. Create or open a C# project in Visual Studio Code (Visual Studio untested).
2. Set or add the following properties to an `.editorconfig` file that applies to the project:
```
csharp_style_var_elsewhere = false:suggestion
csharp_style_var_when_type_is_apparent = true:suggestion
```
3. Add the following code wherever syntactically applicable:
```cs
var e = E.A;
enum E { A }
```
4. Observe the suggestion `Use explicit type instead of 'var' (IDE0008)` on the `var` keyword.

### Expected Behavior

The suggestion is not emitted, as the type is quite apparent.

### Actual Behavior

The suggestion is emitted.

The suggestion is not emitted for these snippets:
```cs
var e = default(E);
```
```cs
var e = new E();
```

No source files or tests are named. Reproduce the diagnostic in a C# project using the shown .editorconfig settings, then compare the enum assignment with the default(E) and new E() examples; done means IDE0008 is not reported for the enum value assignment while the intended var rules remain intact.

Written by the indexing model from the issue text.