fix: render markdown in MR comments

Tomas Vik (OOO back on 2026-08-31)requested to merge
572-render-comments-as-markdown into main

VS Code stopped rendering the comment body as Markdown by default, instead, we need to wrap the body in vscode.MarkdownString class. Detailed description of the issue is in #572 (closed)

before after
gitlab-vscode-extension Extension_Development_Host_-_gitlab-vscode-extension-TEST

Related to #572 (closed)

Edited by Tomas Vik (OOO back on 2026-08-31)

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