Fix py_test with nested target name (#485) #1512

Job	Run time
verify-bcr-patches	3s
test / matrix-prep-os	1s
test / matrix-prep-bazelversion	2s
test / test (ubuntu-latest, 7.4.0, ., false)	12m 19s
test / test (ubuntu-latest, 7.4.0, e2e/smoke, true)	4m 36s
test / test (ubuntu-latest, 7.4.0, e2e/smoke, false)	4m 26s
test / test (ubuntu-latest, 7.4.0, e2e/repository-rule-deps, true)	4m 30s
test / test (ubuntu-latest, 7.4.0, e2e/system-interpreter, true)	4m 27s
test / test (ubuntu-latest, 7.4.0, examples/uv_pip_compile, true)	19s
test / test (ubuntu-latest, 8.0.0rc1, examples/uv_pip_compile, true)	22s
test / test (macos-latest, 7.4.0, ., false)	24m 10s
test / test (macos-latest, 7.4.0, e2e/smoke, true)	4m 24s
test / test (macos-latest, 7.4.0, e2e/smoke, false)	4m 20s
test / test (macos-latest, 7.4.0, e2e/repository-rule-deps, true)	4m 45s
test / test (macos-latest, 7.4.0, e2e/system-interpreter, true)	5m 36s
test / test (macos-latest, 7.4.0, examples/uv_pip_compile, true)	29s
test / test (macos-latest, 8.0.0rc1, examples/uv_pip_compile, true)	49s
conclusion	2s
	1h 15m 40s

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