[Feature] Enable support for go.work files in non-root modules (#2067)
**What type of PR is this?**
Feature
**What package or component does this PR mostly affect?**
language/go
**What does this PR do? Why is it needed?**
As part of #1731, we disabled multiple go.work files due to only time
constraints and uncertainty about its implications. After thorough
consideration and nearly a year of running with this removed without
issues, I feel comfortable enabling it.
Reasoning: Since go.work files are essentially rollups of go.mod files,
and we already support multiple go.mod files, extending support to
go.work files is a natural and safe progression.
**Which issues(s) does this PR fix?**
**Other notes for review**
diff --git a/internal/bzlmod/go_deps.bzl b/internal/bzlmod/go_deps.bzl
index 6e57e84..bfa5bcf 100644
--- a/internal/bzlmod/go_deps.bzl
+++ b/internal/bzlmod/go_deps.bzl
@@ -400,9 +400,6 @@
if from_file_tag.go_mod:
from_file_tags.append(from_file_tag)
elif from_file_tag.go_work:
- if module.is_root != True:
- fail("go_deps.from_file(go_work = '{}') tag can only be used from a root module but: '{}' is not a root module.".format(from_file_tag.go_work, module.name))
-
go_work = go_work_from_label(module_ctx, from_file_tag.go_work)
# this ensures go.work replacements are considered
