fix: non-relevant directories are added if conf/locale is missing

When python-translations is processed; we can have non-relevant directories added
to the translation directory if `make extract_translations` did not generate
the proper English directory at conf/locale

Refs: FC-0012 OEP-58

.github/workflows/extract-translation-source-files.yml

@@ -140,6 +140,13 @@ jobs:
           # finds the directory containing the english locale usually located in
           # */*/conf/locale/en
           EN_DIR=$(find . -type d -regex ".+conf\/locale\/en$")
+          # If the directory is not found, exit with an error. This can happen if we add a repository that doesn't
+          # comply with OEP-58, or it still doesn't have any translations yet
+          if [ -z "$EN_DIR" ]; then
+            echo "Missing English locale directory for ${{ matrix.repo.repo_name }}!"
+            echo "exiting with error!"
+            exit 1
+          fi
           # remove translations/${{ matrix.repo.repo_name }}/.git so we don't commit a submodule
           rm -rf .git
           # finds the django.po and djangojs.po files generated by make