"Failed to find a Bazel Workspace file" on non bazel repos that include BUILD files

[timfallmk]

I don't know if this is intended behavior, but for every repo I open that doesn't use bezel, but does contain BUILD files for a different build system, I get the following error:

Failed to find a Bazel workspace

I'm wondering if this is the intended behavior, or if there's a regression. I found this bug from 2023 which seems to have been fixed.

This may also be related to #428