Run prettier in svelte files

[walmazacn]

Run prettier in svelte files when the following issue is merged:
#3998

[ndricimrr]

Randomly caught on this... I remember we had some "issues" on Adds prettier commit hook for svelte files specifically regarding prettier and plugin migration from 1 - 3 so we decided to skip and keep v1 because of some new syntax introduced.

I think the Bump svelte and prettier-plugin-svelte is valid concern from dependabot, but might need to be careful and investigate before getting this PR (#3999) merged and what 'damage' does it cause to Svelte files if any.

If there's no issue with the resulting Svelte prettier changes after all (bundles OK and syntax looks good), then instead of just applying Prettier in Svelte Files, maybe it would be best to apply it to the whole repo with npm run full-code-quality-prettier at once to avoid future merge conflicts. Tried that on this branch (3998-bump-prettier-and-prettier-plugin-svelte) and it outputted 170+ File changes (.HTML, .js, .ts, .svelte, ).