Enhancement: Boost - urls should use Jetpack Redirect service

### Impacted plugin

Boost

### What

A lot of the URLs in boost are hard-coded. We should migrate them to use the Jetpack Redirect service.

### How

Add URLs to Jetpack Redirect and update hard-coded ones to use aliases.

Start by locating the Boost plugin code containing hard-coded URLs; the issue names no specific files, tests, or entry points. Review how the Jetpack Redirect service is used elsewhere in the repository, then identify every affected URL and verify that each uses an added alias.

Written by the indexing model from the issue text.