Type definition breaks LSP hover

[xsebek]

Describe the bug

A type definition breaks LSP hover.

To Reproduce

Create a file color.sw:

tydef Color = Bool end
def black = false end
def red = true end  // hover on red or true

any hover produces just:

tydef Color = Bool end

def black = false end

def red = true end

A type synonym definition.

But without the tydef:

red: Bool

true: Bool
A boolean literal.

Expected behavior

LSP should descend into tydef.

Screenshots

Additional context

Discovered in #2161.