Useless fix is suggested to `CS0612: XXX is obsolete` when the obsolete thing is a part of the Attribute for fields/props

**Version Used**:
VS2022 17.1.0 preview1.1
dotnet format: 6.0.252703+68bc36719088c86b0ff01334039b0611741b8276

**Steps to Reproduce**:
```cs
[Obsolete]
public class Attr1Attribute : Attribute
{
public Attr1Attribute(Type t) { }
}

[Obsolete]
public class Class1
{
}
public class Class2
{
[Attr1(typeof(Class1))]
public int field1;
}
```
Run `dotnet format` with this code.

**Expected Behavior**:
`dotnet format` should finally get an stable result.

**Actual Behavior**:
`[Obsolete]` is added to field again and again every times you run `dotnet format`, and finally you will get an field like this
```cs
public class Class2
{
[Attr1(typeof(Class1))]
[Obsolete]
[Obsolete]
//...
[Obsolete]
[Obsolete]
public int field1;
}
```