Document conflicting policies across multiple clusters

If 2 policies target the same root host, and one has loadbalancing defined and the other does not, how is this conflict identified and corrected.

things to cover in the doc:
- what alerts would be firing (dns record and dns policy not ready)
- what would policy conditions would look like (not ready and partially/false enforced and a condition regarding failure to write records from one record)

steps to recover:
- Either add or remove load balancing spec from one policy.

steps to ensure recovery is successful:
- confirm alerts stop firing
- confirm policy status looks correct

@averevki to add a ticket to automate this as a QE test - https://github.com/Kuadrant/testsuite/issues/789