Emphasize about same anonymous types not being equal when from separate assemblies (#38421)

* Add note to anonymous types equality regarding separate assemblies

* Add anonymous types to default access table and link to it

* Update docs/csharp/fundamentals/types/anonymous-types.md

---------

Co-authored-by: Bill Wagner <[email protected]>

Author: BartoszKlonowski

docs/csharp/fundamentals/types/anonymous-types.md

@@ -61,6 +61,10 @@ You cannot declare a field, a property, an event, or the return type of a method
 
 Because the <xref:System.Object.Equals%2A> and <xref:System.Object.GetHashCode%2A> methods on anonymous types are defined in terms of the `Equals` and `GetHashCode` methods of the properties, two instances of the same anonymous type are equal only if all their properties are equal.
 
+> [!NOTE]
+> The [accessibility level](../../programming-guide/classes-and-structs/access-modifiers.md#default-access-summary-table) of an anonymous type is `internal`, hence two anonymous types defined in different assemblies are not of the same type.
+> Therefore instances of anonymous types can't be equal to each other when defined in different assemblies, even when having all their properties equal.
+
 Anonymous types do override the <xref:System.Object.ToString%2A> method, concatenating the name and `ToString` output of every property surrounded by curly braces.
 
 ```

docs/csharp/programming-guide/classes-and-structs/access-modifiers.md

@@ -78,6 +78,7 @@ Delegates behave like classes and structs. By default, they have `internal` acce
 | `record`                                          |    internal    |
 | `enum`                                            |    internal    |
 | `interface` members                               |     public     |
+| Anonymous types                                   |    internal    |
 | [class, record, and struct members](./members.md) |    private     |
 
 For more details see the [Accessibility Levels](../../language-reference/keywords/accessibility-levels.md) page.
@@ -103,3 +104,4 @@ For more details see the [Accessibility Levels](../../language-reference/keyword
 - [class](../../language-reference/keywords/class.md)
 - [struct](../../language-reference/builtin-types/struct.md)
 - [interface](../../language-reference/keywords/interface.md)
+- [Anonymous types](../../fundamentals/types/anonymous-types.md)