[Backport] Fix the issue with customer inline edit when password is expired

[dmytro-ch]

Original PR: #18308

Description

The issue appeared because of the success, notice and warning messages considered as error ones.

Fixed Issues (if relevant)

1. Cannot edit customer using inline edit if password is expired #18162: Cannot edit customer using inline edit if password is expired

Manual testing scenarios

1. Set admin/security/password_is_forced to 0 (Recommended).
2. Make sure Password Lifetime is past so the message It's time to change your password. is shown.
3. Open customer grid and try to edit and save using inline editor.

Expected result

1. Customer is saved.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @dmytro-ch. Thank you for your contribution.
We will aim to release these changes as part of 2.2.8.
Please check the release notes for final confirmation.

Please, consider to port this solution to 2.3 release line.
You may use Porting tool to port commits automatically.