Probably unnecessary MariaDB global configuration change requirement

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Is your feature request related to a problem? Please describe.

According to

https://docs.nextcloud.com/server/stable/admin_manual/configuration_database/linux_database_configuration.html#configuring-a-mysql-or-mariadb-database

Nextcloud requires non default MariaDB settings

transaction_isolation = READ-COMMITTED
binlog_format = ROW

Accoring to

https://help.nextcloud.com/t/transaction-isolation-level-of-nextcloud-database/88858/4

Nextcloud already sets transaction_isolation for its sessions.

Accroding to

https://mariadb.com/kb/en/binary-log-formats/#configuring-the-binary-log-format

binary log format may be configured per session too but I didn't find such solution in Nextcloud source.

Describe the solution you'd like

Please verify and consider removing MariaDB global configuration change requirement for transaction_isolation and binlog_format if not absolutely required (Nextcloud should configure own sessions only); don't not force admin to globally change default db server settings if not required as it may interfere with other applications using other databases on same server.

No source file or test is named. Start by reviewing the linked MariaDB configuration documentation and searching the Nextcloud source for transaction_isolation and binlog_format handling; done means verifying whether both settings are required globally and updating the relevant configuration documentation or implementation accordingly.