V3 - update transformers.js dependency in examples

[neonwatty]

Building on 903 this updates the remainder of examples' dependencies to v3.

This involves two simple updates - first to dependency in relevant package.json files

"@xenova/transformers": "github:xenova/transformers.js#v3" -->  "@huggingface/transformers": "^3.0.0-alpha.10"

and secondly to import of the library in corresponding worker / index files:

import {} from '@xenova/transformers'; --> import {} from '@huggingface/transformers';

Changes tested with each example locally and work as expected.