Michael Schimmel
84226f6a16
This commit replaces the `UntypedNode` enum with the more accurately named `SyntaxNode`. This change is primarily for clarity and better reflects the role of these nodes as representing the structure of the source code prior to semantic analysis. The corresponding enum `UntypedKind` has also been renamed to `SyntaxKind` to maintain consistency. No functional changes are introduced by this refactoring; it is purely a renaming and organizational update.