detailed-0.9: Test module must not be named Main

In the Cabal file I have:
~~~~
test-suite mytest
type: detailed-0.9
test-module: Main
other-modules: Tests
~~~~

~~~~
$ cabal-3.2 v1-test
...
[2 of 2] Compiling Main ( test/Main.hs, dist/build/mytest/Main.o )
Module imports form a cycle:
module ‘Main’ (dist/build/mytestStub/mytestStub-tmp/mytestStub.hs) imports itself
~~~~

It seems that Cabal creates its own Main module for `detailed` tests and this one conflicts with my one. I'd prefer that Cabal directly warns about a Test-Module named `Main` and that this is documented in Cabal's user guide.