[build.ps1] "-All" is poorly named

`build.ps1 -All` doesn't actually build everything - it builds all source project types (C#/Native/Java/Node), plus the SharedFx/Targeting Pack. It doesn't build the Installers. We should change it to build everything, and update CI to pass `-NoBuildInstallers` wherever we're currently passing `-All`.

Start by inspecting build.ps1 to trace the -All option and identify the CI files that currently pass -All. Update the naming and build behavior as described, then verify that CI uses -NoBuildInstallers where appropriate and that the resulting build includes installers.

Written by the indexing model from the issue text.