[api-extractor] Imported function type annotation causes function to be in Variables section

[YElyousfi]

Summary

Repro steps

Generate markdown documentation for the following

import MyFunctionType from "./somewhere.js
// MyFunctionType is alias for `() => boolean`

export const fn1: () => boolean = () => true // Function section
export const fn2: MyFunctionType = () => true // Variables section

Expected result:
I expect fn2 to be in the Function section of the generated docs

Actual result:
fn2 is in the Variables section

Details

Imported types seem to not be inferred as functions when annotating variables

Standard questions

Please answer these questions to help us investigate your issue more quickly:

Question	Answer
@microsoft/api-extractor version?	7.52.10
Operating system?	Windows
API Extractor scenario?	kind classification
Would you consider contributing a PR?	No
TypeScript compiler version?	5.8.3
Node.js version (node -v)?	24.4.1