Just set textContent for custom hover

Fixes #111643

src/vs/workbench/services/hover/browser/hoverWidget.ts

@@ -16,7 +16,6 @@ import { Widget } from 'vs/base/browser/ui/widget';
 import { AnchorPosition } from 'vs/base/browser/ui/contextview/contextview';
 import { IOpenerService } from 'vs/platform/opener/common/opener';
 import { IWorkbenchLayoutService } from 'vs/workbench/services/layout/browser/layoutService';
-import { MarkdownString, MarkdownStringTextNewlineStyle } from 'vs/base/common/htmlContent';
 import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
 import { MarkdownRenderer } from 'vs/editor/browser/core/markdownRenderer';
 
@@ -82,8 +81,10 @@ export class HoverWidget extends Widget {
 
 		const rowElement = $('div.hover-row.markdown-hover');
 		const contentsElement = $('div.hover-contents');
-		const markdown = typeof options.text === 'string' ? new MarkdownString().appendText(options.text, MarkdownStringTextNewlineStyle.Break) : options.text;
-
+		if (typeof options.text === 'string') {
+			contentsElement.textContent = options.text;
+		} else {
+			const markdown = options.text;
 			const mdRenderer = this._instantiationService.createInstance(
 				MarkdownRenderer,
 				{ codeBlockFontFamily: this._configurationService.getValue<IEditorOptions>('editor').fontFamily || EDITOR_FONT_DEFAULTS.fontFamily }
@@ -101,6 +102,7 @@ export class HoverWidget extends Widget {
 				}
 			});
 			contentsElement.appendChild(element);
+		}
 		rowElement.appendChild(contentsElement);
 		this._hover.contentsDomNode.appendChild(rowElement);