vite / v2 addon, `test-support` from older addons aren't resolved properly

[gossi]

I'm updating ember-command to use vite. The biggy here: gossi/ember-command#138

ember-command uses ember-link and has compat with all its older versions right now. As such there is a test matrix and I wanted to use it with @embroider/try.

Which is here: https://github.com/gossi/ember-command/blob/4019082f059e37c49725eeb61b9c5401a36fe212/.try.mjs

However, the test runs are failing:

• https://github.com/gossi/ember-command/actions/runs/15970039509/job/45039049567?pr=138
• https://github.com/gossi/ember-command/actions/runs/15970039509/job/45039049591?pr=138

Error message is:

[vite]: Rollup failed to resolve import "ember-link/test-support" from "/home/runner/work/ember-command/ember-command/tests/integration/helpers/command-test.gts".

It is either used with ember-link@1 rsp. ember-link@2.

Both times the "old" formats to resolve test-support. I suspect, this isn't supported yet?