skip hidden files when list files with given extension (#10654)

for #10644

erigon-lib/common/dir/rw_dir.go

@@ -19,6 +19,7 @@ package dir
 import (
 	"os"
 	"path/filepath"
+	"strings"
 
 	"golang.org/x/sync/errgroup"
 )
@@ -133,6 +134,9 @@ func ListFiles(dir string, extensions ...string) (paths []string, err error) {
 		if f.IsDir() && !f.Type().IsRegular() {
 			continue
 		}
+		if strings.HasPrefix(f.Name(), ".") {
+			continue
+		}
 		match := false
 		if len(extensions) == 0 {
 			match = true