Stable v2.10.17

• fix(database): apply max_db_statement_timeout_ms to MariaDB users too
• fix(email): IMAP import shows real progress, Sent/Drafts no longer duplicate
• fix(packaging): regenerate the panel's self-signed cert if it goes missing
• fix(php): a site on a non-default PHP series actually gets its modules
• fix(ssl): TLS health no longer reads a never-issued certificate as a wrong one