style: format code with Gofumpt and Prettier

This commit fixes the style issues introduced in 39b66fa according to the output
from Gofumpt and Prettier.

Details: #2428

pkg/agent/core/ngt/service/ngt_test.go

@@ -36,6 +36,7 @@ import (
 	core "github.com/vdaas/vald/internal/core/algorithm/ngt"
 	"github.com/vdaas/vald/internal/errors"
 	"github.com/vdaas/vald/internal/file"
+	kvald "github.com/vdaas/vald/internal/k8s/vald"
 	"github.com/vdaas/vald/internal/log"
 	"github.com/vdaas/vald/internal/safety"
 	"github.com/vdaas/vald/internal/strings"
@@ -46,7 +47,6 @@ import (
 	"github.com/vdaas/vald/internal/test/goleak"
 	"github.com/vdaas/vald/internal/test/mock/k8s"
 	"github.com/vdaas/vald/internal/test/testify"
-	kvald "github.com/vdaas/vald/internal/k8s/vald"
 	"github.com/vdaas/vald/pkg/agent/internal/kvs"
 	"github.com/vdaas/vald/pkg/agent/internal/metadata"
 	"github.com/vdaas/vald/pkg/agent/internal/vqueue"