improve message when files is too large for formatting, fixes...

improve message when files is too large for formatting, fixes https://github.com/microsoft/vscode/issues/105986

src/vs/workbench/contrib/format/browser/formatActionsNone.ts

@@ -55,6 +55,8 @@ registerEditorAction(class FormatDocumentMultipleAction extends EditorAction {
 			return commandService.executeCommand('editor.action.formatDocument.multiple');
 		} else if (formatterCount === 1) {
 			return commandService.executeCommand('editor.action.formatDocument');
+		} else if (model.isTooLargeForSyncing()) {
+			notificationService.prompt(Severity.Info, nls.localize('too.large', "This file cannot be formatted because it is too large"), []);
 		} else {
 			const langName = model.getLanguageIdentifier().language;
 			const message = nls.localize('no.provider', "There is no formatter for '{0}' files installed.", langName);