Merge pull request #70192 from mohit84/mclock_crimson_other_ops

crimson/osd: extend mClock throttle to all op types

For crimson the operations repop, EC replica ops, recovery sub-requests, log missing,
snap trim, scrub scan, internal client requests, bypass the throttler entirely.

This PR extends get_throttle() to all op types that perform actual SeaStore I/O, acquiring a throttle slot just before
the actual I/O work begins and holding it for the op's lifetime via RAII ThrottleReleaser.