Incorrect `key.modulename` of constructor in Cursor Info

[AppAppWorks]

Description

As reported in Jump-to-definition to init of a C struct does not work, sourcekitd will return an incorrect value of key.modulename for a non-existent constructor of a C struct. This incorrect module name prevents the subsequent navigation to the designated generated interface.

Reproduction

import Darwin

func test() {
  _ = timespec(tv_sec: 0, tv_nsec: 0)
}

The cursor info (truncated) of the initializer of timespec returned by sourcekitd is as follows,

key.kind: source.lang.swift.ref.function.constructor,
key.name: "init(tv_sec:tv_nsec:)",
key.usr: "s:So8timespecV6tv_sec0B5_nsecABSi_Sitcfc",
key.typename: "(timespec.Type) -> (Int, Int) -> timespec",
key.modulename: "Darwin",
...
key.is_system: true,
...
key.decl_lang: source.lang.swift,

Expected behavior

The expected value of key.modulename should be "Darwin.POSIX.sys.types._timespec" Instead of "Darwin".

Environment

swiftlang-6.0.0.6.8 clang-1600.0.23.1

Additional information

No response