Support templates with `getContents()` for nuxt 2

Editor assessment

The subject states the capability, its mechanism, and its target — templates using `getContents()` are supported for nuxt 2 — so the header communicates the feature and its compatibility scope without the diff, and feat(kit) classifies and locates it correctly. Hygiene is clean: imperative mood, no trailing period, sensible length, no ticket junk. No body is present, tolerable for a contained API extension, and no footer is required. A line on how the kit bridges the newer template API to nuxt 2 would add value; the message is clear and publishable.