FerretDB: Fix reconciliation issue

[ArnobKumarSaha]

• [ ] If Postgres is watched & pg operator is running, ferretdb continuously get reconciled. It maintains this pattern

I0506 16:53:57.257855       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:53:57.287258       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:07.263845       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:07.296272       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:17.263341       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:17.292803       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:27.261901       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"
I0506 16:54:27.287404       1 reconcile.go:59] "Reconciling FerretDB ..................................." FerretDB="demo/fer"

If 1) We remove Postgres from the watcher of the ferretdb operator. or 2) scaler down the pg operator replicas to 0, the reconciliation rate gets normal.

• [ ] On each of the reconciliation, PetSet gets empty patched.