FIX (dump): Get rid of extra encoding param when backup and restore

Author: RostislavDugin

backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go

@@ -417,7 +417,6 @@ func (uc *CreatePostgresqlBackupUsecase) setupPgEnvironment(
 		"PGCONNECT_TIMEOUT="+strconv.Itoa(pgConnectTimeout),
 		"LC_ALL=C.UTF-8",
 		"LANG=C.UTF-8",
-		"PGOPTIONS=--client-encoding=UTF8",
 	)
 
 	if shouldRequireSSL {
@@ -611,7 +610,6 @@ func (uc *CreatePostgresqlBackupUsecase) handleExitCode1NoStderr(
 			"PGCONNECT_TIMEOUT=" + strconv.Itoa(pgConnectTimeout),
 			"LC_ALL=C.UTF-8",
 			"LANG=C.UTF-8",
-			"PGOPTIONS=--client-encoding=UTF8",
 		},
 	)
 

backend/internal/features/restores/usecases/postgresql/restore_backup_uc.go

@@ -378,7 +378,6 @@ func (uc *RestorePostgresqlBackupUsecase) setupPgRestoreEnvironment(
 	// Add encoding-related environment variables
 	cmd.Env = append(cmd.Env, "LC_ALL=C.UTF-8")
 	cmd.Env = append(cmd.Env, "LANG=C.UTF-8")
-	cmd.Env = append(cmd.Env, "PGOPTIONS=--client-encoding=UTF8")
 
 	shouldRequireSSL := pgConfig.IsHttps