CLOS-3833: Fix mysqlclient and cl-MySQL/MariaDB packages not upgrading when repos disabled

[prilr]

When MySQL Governor manages the database, both repos in cl-mysql.repo (cl-mysql-meta and mysqclient) may be disabled. The clmysql_process() method would skip adding "cloudlinux" to mysql_types and skip producing CustomTargetRepositoryFile, causing finalize() to never produce the target repos. DNF then silently drops the upgrades for mysqlclient and cl-MariaDB/cl-MySQL packages because no target repo provides them.

After the change, the actor will now always register "cloudlinux" type and produce target repos when CL MySQL/MariaDB is detected, regardless of source repo enabled state.
The cl-mysql-meta target repo (in addition to mysqclient) is also force-enabled so cl-MariaDB-meta and module packages can be resolved.

[github-actions]

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[azheregelya]

LGTM