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/eventstore/repository/search_query.go

@@ -3,6 +3,8 @@ package repository
 import (
 	"database/sql"
 
+	"github.com/shopspring/decimal"
+
 	"github.com/zitadel/zitadel/internal/database"
 	"github.com/zitadel/zitadel/internal/eventstore"
 	"github.com/zitadel/zitadel/internal/zerrors"
@@ -57,6 +59,8 @@ const (
 	// OperationNotIn checks if a stored value does not match one of the passed value list
 	OperationNotIn
 
+	OperationGreaterOrEquals
+
 	operationCount
 )
 
@@ -250,10 +254,10 @@ func instanceIDsFilter(builder *eventstore.SearchQueryBuilder, query *SearchQuer
 }
 
 func positionAfterFilter(builder *eventstore.SearchQueryBuilder, query *SearchQuery) *Filter {
-	if builder.GetPositionAfter() == 0 {
+	if builder.GetPositionAtLeast().IsZero() {
 		return nil
 	}
-	query.Position = NewFilter(FieldPosition, builder.GetPositionAfter(), OperationGreater)
+	query.Position = NewFilter(FieldPosition, builder.GetPositionAtLeast(), OperationGreaterOrEquals)
 	return query.Position
 }
 
@@ -295,7 +299,7 @@ func eventDataFilter(query *eventstore.SearchQuery) *Filter {
 }
 
 func eventPositionAfterFilter(query *eventstore.SearchQuery) *Filter {
-	if pos := query.GetPositionAfter(); pos != 0 {
+	if pos := query.GetPositionAfter(); !pos.Equal(decimal.Decimal{}) {
 		return NewFilter(FieldPosition, pos, OperationGreater)
 	}
 	return nil