next.js

0c14b38c - docs(cacheTag): remove unused `cacheLife` import and add missing `switcher` (#72217)

docs(cacheTag): remove unused `cacheLife` import and add missing `switcher` (#72217) This PR fixes two issues on the [cacheTag](https://nextjs.org/docs/canary/app/api-reference/functions/cacheTag) documentation page: 1. Remove the unused `unstable_cacheLife` import in the TypeScript codeblock of [Creating tags from external data](https://nextjs.org/docs/canary/app/api-reference/functions/cacheTag#creating-tags-from-external-data) section:  2. Missing `switcher` for TS codeblock in [Creating tags from external data](https://nextjs.org/docs/canary/app/api-reference/functions/cacheTag#creating-tags-from-external-data) and [Invalidating tagged cache](https://nextjs.org/docs/canary/app/api-reference/functions/cacheTag#invalidating-tagged-cache) sections. We already have the corresponding JS codeblock in the Markdown.   Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>