autodoc: `pub const` function alias is rendered incorrectly

[squeek502]

This could overlap with #19528 and/or #17334, but it is different enough that I'm opening a new issue.

In std.fs.path, there are fmtAsUtf8Lossy and fmtWtf16LeAsUtf8Lossy:

zig/lib/std/fs/path.zig

Lines 1943 to 1956 in 624fa85

	/// Format a path encoded as bytes for display as UTF-8.
	/// Returns a Formatter for the given path. The path will be converted to valid UTF-8
	/// during formatting. This is a lossy conversion if the path contains any ill-formed UTF-8.
	/// Ill-formed UTF-8 byte sequences are replaced by the replacement character (U+FFFD)
	/// according to "U+FFFD Substitution of Maximal Subparts" from Chapter 3 of
	/// the Unicode standard, and as specified by https://encoding.spec.whatwg.org/#utf-8-decoder
	pub const fmtAsUtf8Lossy = std.unicode.fmtUtf8;
	/// Format a path encoded as WTF-16 LE for display as UTF-8.
	/// Return a Formatter for a (potentially ill-formed) UTF-16 LE path.
	/// The path will be converted to valid UTF-8 during formatting. This is
	/// a lossy conversion if the path contains any unpaired surrogates.
	/// Unpaired surrogates are replaced by the replacement character (U+FFFD).
	pub const fmtWtf16LeAsUtf8Lossy = std.unicode.fmtUtf16Le;

However, autodoc does not render with those names/doc comments included at all, instead rendering them as fmtUtf8 and fmtUtf16Le:

From https://ziglang.org/documentation/master/std/#std.fs.path

I expect the std.fs.path autodoc to have the names and doc comments from std/fs/path.zig.

[inge4pres]

I guess this is the same issue we see in #19836.
Apparently the alias symbol is lost and is forwarded to the aliased one.