fix(projections): pass context to statement execution method (#10328)

## Which problems are solved

The execution of statements of projections did not have the context
present.

## How the problems were solved

Pass the context to the execute function

## Additional info

This change is required to use the repositories of the relational tables
in projections.

(cherry picked from commit 20e7807ee5)

internal/execution/ctx.go

@@ -9,8 +9,8 @@ import (
 
 const ExecutionUserID = "EXECUTION"
 
-func HandlerContext(event *eventstore.Aggregate) context.Context {
-	ctx := authz.WithInstanceID(context.Background(), event.InstanceID)
+func HandlerContext(parent context.Context, event *eventstore.Aggregate) context.Context {
+	ctx := authz.WithInstanceID(parent, event.InstanceID)
 	return authz.SetCtxData(ctx, authz.CtxData{UserID: ExecutionUserID, OrgID: event.ResourceOwner})
 }