Allow updating webview settings after creation

Fixes #51733

extensions/markdown-language-features/src/features/preview.ts

@@ -34,14 +34,14 @@ export class MarkdownPreview {
 	private isScrolling = false;
 	private _disposed: boolean = false;
 
-
 	public static async revive(
 		webview: vscode.WebviewPanel,
 		state: any,
 		contentProvider: MarkdownContentProvider,
 		previewConfigurations: MarkdownPreviewConfigurationManager,
 		logger: Logger,
-		topmostLineMonitor: MarkdownFileTopmostLineMonitor
+		topmostLineMonitor: MarkdownFileTopmostLineMonitor,
+		contributions: MarkdownContributions,
 	): Promise<MarkdownPreview> {
 		const resource = vscode.Uri.parse(state.resource);
 		const locked = state.locked;
@@ -56,6 +56,12 @@ export class MarkdownPreview {
 			logger,
 			topmostLineMonitor);
 
+		preview.editor.webview.options = {
+			enableScripts: true,
+			enableCommandUris: true,
+			localResourceRoots: MarkdownPreview.getLocalResourceRoots(resource, contributions)
+		};
+
 		if (!isNaN(line)) {
 			preview.line = line;
 		}

extensions/markdown-language-features/src/features/previewManager.ts

@@ -89,7 +89,8 @@ export class MarkdownPreviewManager implements vscode.WebviewPanelSerializer {
 			this._contentProvider,
 			this._previewConfigurations,
 			this._logger,
-			this._topmostLineMonitor);
+			this._topmostLineMonitor,
+			this._contributions);
 
 		this.registerPreview(preview);
 	}