Lost x_defs attribute on test execution

[bozaro]

What version of rules_go are you using?

v0.31.0

What version of gazelle are you using?

None

What version of Bazel are you using?

5.1.1

Does this issue reproduce with the latest releases of all the above?

Yes

What operating system and processor architecture are you using?

Ubuntu 21.10

Any other potentially useful information about your toolchain?

None

What did you do?

I lost all x_defs declaration on some packages (qux) with dependency graph like:

graph TD
    foo
    foo_test
    bar
    baz
    qux

    foo_test --> bar
    foo_test -.-> foo
    bar --> baz
    bar --> foo
    baz --> qux

Minimal workspace for reproducing the error: https://github.com/bozaro/rules_go_xdefs

Reproducing steps:

• Checkout https://github.com/bozaro/rules_go_xdefs
• Run bazel test //...

What did you expect to see?

All tests passed.

What did you see instead?

I have lost x_defs attribute only in qux package and see test error:

INFO: From Testing //foo:foo_test:
==================== Test output for //foo:foo_test:
--- FAIL: TestQux (0.00s)
    foo_test.go:23: Not equal: 
        expected: Qux
        actual  : 
FAIL
================================================================================

Variable Qux set by:

go_library(
    name = "qux",
    srcs = ["qux.go"],
    importpath = "github.com/bozaro/rules_go_xdefs/qux",
    visibility = ["//visibility:public"],
    x_defs = {"Qux": "Qux"},
)