Inconsistent results of multiple imports with `(reference)`.

Variables in @import statement cause for unexpected result.

I prepared demo app.
https://github.com/mantsevich/less-variables-import-issue-demo

1. download
2. npm i
3. npm start
4. compare "correct.css" & "issue.css" files.

What do we have:

• Two similar files: entry-correct.less & entry-issue.less import 2 components: hello-galaxy & hello-world
• hello-world imports hello-galaxy component with (reference) flag

Difference in the source code: entry-issue.less uses variable in @import statement.
Difference in the result: issue.css doesn't include hello-galaxy component at all.

Expected result: Result of CSS files should be identical.

I think problem related @import with variable in the path + @import (reference) in the child less files. If remove (reference) flag from hello-world.less file, then result will be "the same".

Start with the linked demo: run npm i and npm start, then compare correct.css and issue.css. Read _entry-correct.less, _entry-issue.less, _hello-world.less, and _hello-galaxy.less to trace the variable-based @import and (reference) behavior. Done means both entry files produce identical CSS while preserving the reported import semantics.