[24.1] Use smtplib send_message to support utf-8 chars in to and from

[mvdbeek]

Fixes #18804.
Manually tested with docker run --rm -it -p 5001:80 -p 2525:25 rnwood/smtp4dev which pretty convenient.

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[nsoranzo]

@mvdbeek I've pushed a small refactoring to ensure the SMTP connection is terminated also if send_message() raises an exception, if you'd like to test it.

[galaxyproject-sentryintegration]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ SMTPNotSupportedError: One or more source or delivery addresses require internationalized email support, but the server ... https://127.0.0.1:8081/user/create View Issue

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[nsoranzo]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

* ‼️ **SMTPNotSupportedError: One or more source or delivery addresses require internationalized email support, but the server ...** `https://127.0.0.1:8081/user/create` [View Issue](https://sentry.galaxyproject.org/organizations/galaxy/issues/161078/?referrer=github-pr-bot)

It seems the usegalaxy.org's email server doesn't support the SMTPUTF8 capability @natefoo ?

[mvdbeek]

Ad while we're at it, I think vgp.usegalaxy.org doesn't support sending emails at all.