fix(import): add tracing spans to all import related functions (#8160)

# Which Problems Are Solved

This fix adds tracing spans to all V1 API import related functions. This
is to troubleshoot import related performance issues reported to us.

# How the Problems Are Solved

Add a tracing span to `api/grpc/admin/import.go` and all related
functions that are called in the `command` package.

# Additional Changes

- none

# Additional Context

- Reported by internal communication

internal/eventstore/repository/sql/crdb.go

@@ -18,6 +18,7 @@ import (
 	"github.com/zitadel/zitadel/internal/database/dialect"
 	"github.com/zitadel/zitadel/internal/eventstore"
 	"github.com/zitadel/zitadel/internal/eventstore/repository"
+	"github.com/zitadel/zitadel/internal/telemetry/tracing"
 	"github.com/zitadel/zitadel/internal/zerrors"
 )
 
@@ -248,8 +249,11 @@ func (db *CRDB) handleUniqueConstraints(ctx context.Context, tx *sql.Tx, uniqueC
 }
 
 // FilterToReducer finds all events matching the given search query and passes them to the reduce function.
-func (crdb *CRDB) FilterToReducer(ctx context.Context, searchQuery *eventstore.SearchQueryBuilder, reduce eventstore.Reducer) error {
-	err := query(ctx, crdb, searchQuery, reduce, false)
+func (crdb *CRDB) FilterToReducer(ctx context.Context, searchQuery *eventstore.SearchQueryBuilder, reduce eventstore.Reducer) (err error) {
+	ctx, span := tracing.NewSpan(ctx)
+	defer func() { span.EndWithError(err) }()
+
+	err = query(ctx, crdb, searchQuery, reduce, false)
 	if err == nil {
 		return nil
 	}