fix(eventstore): use decimal, correct mirror (#9914)

# Eventstore fixes

- `event.Position` used float64 before which can lead to [precision
loss](https://github.com/golang/go/issues/47300). The type got replaced
by [a type without precision
loss](https://github.com/jackc/pgx-shopspring-decimal)
- the handler reported the wrong error if the current state was updated
and therefore took longer to retry failed events.

# Mirror fixes

- max age of auth requests can be configured to speed up copying data
from `auth.auth_requests` table. Auth requests last updated before the
set age will be ignored. Default is 1 month
- notification projections are skipped because notifications should be
sent by the source system. The projections are set to the latest
position
- ensure that mirror can be executed multiple times

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/v2/database/number_filter.go

@@ -3,6 +3,7 @@ package database
 import (
 	"time"
 
+	"github.com/shopspring/decimal"
 	"github.com/zitadel/logging"
 	"golang.org/x/exp/constraints"
 )
@@ -94,7 +95,7 @@ func (c numberCompare) String() string {
 }
 
 type number interface {
-	constraints.Integer | constraints.Float | time.Time
+	constraints.Integer | constraints.Float | time.Time | decimal.Decimal
 	// TODO: condition must know if it's args are named parameters or not
 	// constraints.Integer | constraints.Float | time.Time | placeholder
 }