Support fallback language in get_template with try/catch error handling

[yakov-sudo]

Description

Currently, in the get_template method in post_office/mail.py (around line 200), if a translation lookup fails, the entire operation may fail or throw an exception.

Proposed Solution

We should wrap the template retrieval logic in a try/catch block so that if we don't have a translation for the requested language, we gracefully fall back to the original email template instead of failing completely.

File Reference

django-post_office/post_office/mail.py

Line 200 in 99be3b5

if isinstance(template, EmailTemplate):

Benefits

• Improved robustness and reliability of the email system
• Graceful degradation when translations are unavailable
• Better user experience by always sending emails, even if translation fails
• Prevents application crashes due to missing language translations