MM-57512: Disable content extraction during import (#26619)

https://mattermost.atlassian.net/browse/MM-57512
```release-note
NONE
```

server/cmd/mattermost/commands/import.go

@@ -156,7 +156,7 @@ func bulkImportCmdF(command *cobra.Command, args []string) error {
 
 	CommandPrettyPrintln("")
 
-	if err, lineNumber := a.BulkImportWithPath(rctx, fileReader, nil, !apply, workers, importPath); err != nil {
+	if err, lineNumber := a.BulkImportWithPath(rctx, fileReader, nil, true, !apply, workers, importPath); err != nil {
 		CommandPrintErrorln(err.Error())
 		if lineNumber != 0 {
 			CommandPrintErrorln(fmt.Sprintf("Error occurred on data file line %v", lineNumber))

server/cmd/mmctl/commands/import.go

@@ -112,6 +112,7 @@ func init() {
 	ImportValidateCmd.Flags().Bool("check-server-duplicates", true, "Set to false to ignore teams, channels, and users already present on the server")
 
 	ImportProcessCmd.Flags().Bool("bypass-upload", false, "If this is set, the file is not processed from the server, but rather directly read from the filesystem. Works only in --local mode.")
+	ImportProcessCmd.Flags().Bool("extract-content", true, "If this is set, document attachments will be extracted and indexed during the import process. It is advised to disable it to improve performance.")
 
 	ImportListCmd.AddCommand(
 		ImportListAvailableCmd,
@@ -271,11 +272,14 @@ func importProcessCmdF(c client.Client, command *cobra.Command, args []string) e
 		}
 	}
 
+	extractContent, _ := command.Flags().GetBool("extract-content")
+
 	job, _, err := c.CreateJob(context.TODO(), &model.Job{
 		Type: model.JobTypeImportProcess,
 		Data: map[string]string{
-			"import_file": importFile,
-			"local_mode":  strconv.FormatBool(isLocal && bypassUpload),
+			"import_file":     importFile,
+			"local_mode":      strconv.FormatBool(isLocal && bypassUpload),
+			"extract_content": strconv.FormatBool(extractContent),
 		},
 	})
 	if err != nil {

server/cmd/mmctl/commands/import_test.go

@@ -210,7 +210,11 @@ func (s *MmctlUnitTestSuite) TestImportProcessCmdF() {
 	importFile := "import.zip"
 	mockJob := &model.Job{
 		Type: model.JobTypeImportProcess,
-		Data: map[string]string{"import_file": importFile, "local_mode": "false"},
+		Data: map[string]string{
+			"import_file":     importFile,
+			"local_mode":      "false",
+			"extract_content": "false",
+		},
 	}
 
 	s.client.

server/cmd/mmctl/docs/mmctl_import_process.rst

@@ -27,8 +27,9 @@ Options
 
 ::
 
-      --bypass-upload   If this is set, the file is not processed from the server, but rather directly read from the filesystem. Works only in --local mode.
-  -h, --help            help for process
+      --bypass-upload     If this is set, the file is not processed from the server, but rather directly read from the filesystem. Works only in --local mode.
+      --extract-content   If this is set, document attachments will be extracted and indexed during the import process. It is advised to disable it to improve performance. (default true)
+  -h, --help              help for process
 
 Options inherited from parent commands
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~