Summary:
Otel health checks are failing if DBME is disabled.
The previous logic was wrong and would always result in checking for otel health when DBME is enabled then disabled.

Test Plan:
Manually tested:
Created a universe
Enabled DBME - ensure health check runs for the otel process
Disabled DBME - ensure health check doesn't run for the otel process (would fail before this change)

Also:
Run UTs.
Run itests.

Reviewers: amalyshev, dkumar

Reviewed By: dkumar

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D48141