chore: resolve issue with prerelease presubmit [autoapprove] (#417)

* chore(python): fix prerelease session [autoapprove]

Source-Link: googleapis/synthtool@1b9ad76
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:9db98b055a7f8bd82351238ccaacfd3cda58cdf73012ab58b8da146368330021

* fix flaky test

* fix api_shortname in .repo-metadata.json

* use unittest.mock

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <[email protected]>

Author: gcf-owl-bot[bot]

translation/samples/snippets/beta_snippets_test.py

@@ -91,7 +91,7 @@ def test_detect_language(capsys):
 def test_list_languages(capsys):
     beta_snippets.list_languages(PROJECT_ID)
     out, _ = capsys.readouterr()
-    assert "zh-CN" in out
+    assert "zh" in out
 
 
 def test_list_languages_with_target(capsys):

translation/samples/snippets/translate_v3_get_supported_languages_test.py

@@ -23,4 +23,4 @@
 def test_list_languages(capsys):
     translate_v3_get_supported_languages.get_supported_languages(PROJECT_ID)
     out, _ = capsys.readouterr()
-    assert "zh-CN" in out
+    assert "zh" in out