[backport core/1.38] fix: dragging (e.g., when selecting text) in Markdown note causes node to drag#8427

AustinMroz merged 1 commit intocore/1.38Comfy-Org/ComfyUI_frontend:core/1.38from

backport-8413-to-core-1.38Comfy-Org/ComfyUI_frontend:backport-8413-to-core-1.38Copy head branch name to clipboard