[ADD][spp_area_base] Add logging for language activation tracking

- Added info logging in activate_languages method to track which language is being activated
- Helps with debugging and monitoring the area import language activation process
- Provides visibility into which languages are processed during import
- Improves observability for troubleshooting language-related import issues
- Maintains existing functionality while adding operational insights

Author: emjay0921

spp_area_base/models/area_import.py

@@ -225,6 +225,7 @@ def activate_languages(self):
         missing_languages = list(set(self.missing_languages.split(", ")))
         for lang in missing_languages:
             lang = lang.strip().lower()
+            _logger.info(f"Area Import: Activating language: {lang}")
             if lang:
                 language = self.env[_res_lang_model].search([("iso_code", "=", lang)])
                 if language: