Previously, the dev-infra release tool would publish major versions
directly to the NPM `@latest` dist tag. This is correct in theory, but
rather unpractical given that we want to publish packages first as
`@next` so that other dependent Angular packages can update too,
allowing us to publish all main Angular packages (from FW, COMP
and TOOL) at the same time to `@latest` on NPM.
This involves creating a new release action for re-tagging the
previously released major as `@latest` on NPM.
PR Close#42133
9d75687f62