fix(eventstore): revert precise decimal (#8527) (#8679)

internal/eventstore/repository/event.go

@@ -5,8 +5,6 @@ import (
 	"encoding/json"
 	"time"
 
-	"github.com/shopspring/decimal"
-
 	"github.com/zitadel/zitadel/internal/eventstore"
 )
 
@@ -20,7 +18,7 @@ type Event struct {
 	// Seq is the sequence of the event
 	Seq uint64
 	// Pos is the global sequence of the event multiple events can have the same sequence
-	Pos decimal.Decimal
+	Pos float64
 
 	//CreationDate is the time the event is created
 	// it's used for human readability.
@@ -93,7 +91,7 @@ func (e *Event) Sequence() uint64 {
 }
 
 // Position implements [eventstore.Event]
-func (e *Event) Position() decimal.Decimal {
+func (e *Event) Position() float64 {
 	return e.Pos
 }