3081-r-Disable_mail_account_sync_on_cancel_sync

Description

This MR disables /e/OS Mail sync when the sync toggle is set to false.

Screenshots

Technical details

Tests

• https://gitlab.e.foundation/e/os/mail/-/quality/test_cases/80
• https://gitlab.e.foundation/e/os/mail/-/quality/test_cases/81
• https://gitlab.e.foundation/e/os/mail/-/quality/test_cases/82

Issues

• e/backlog#3081 (closed)

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