Properly encode markdown file path for open links

Fixes #59523

Double encode the path so that `Uri.parse`'s decoding only strips out the first level of encoding

extensions/markdown-language-features/src/commands/openDocumentLink.ts

@@ -25,7 +25,7 @@ export class OpenDocumentLinkCommand implements Command {
 		path: string,
 		fragment: string
 	): vscode.Uri {
-		return vscode.Uri.parse(`command:${OpenDocumentLinkCommand.id}?${encodeURIComponent(JSON.stringify({ path, fragment }))}`);
+		return vscode.Uri.parse(`command:${OpenDocumentLinkCommand.id}?${encodeURIComponent(JSON.stringify({ path: encodeURIComponent(path), fragment }))}`);
 	}
 
 	public constructor(