Revert "Rename two internal targets for clarity"

[etcwilde]

Reverts #1330

SwiftPM does not allow different packages to have the same internal target names.
This change causes a regression in CI while building the toolchain as it creates a conflict between target names in Swift-Docc and Swift-Driver.

[2025-11-10T11:28:21.125Z] error: multiple packages ('swift-docc', 'swift-driver') declare targets with a conflicting name: 'TestUtilities'; target names need to be unique across the package graph

https://ci.swift.org/view/all/job/oss-swift-package-freebsd-14/226/

[etcwilde]

@swift-ci please test

[d-ronnqvist]

Can we revert only one of these names if it's the only one that causes problems?

[gottesmm]

This is blocking linux PR testing: https://ci.swift.org/job/swift-PR-Linux/24774/console

[d-ronnqvist]

How can we reintroduce this change without breaking other packages? These targets are internal-only (not products) and aren't usable outside of this repo.

Is there a consumer of both packages that need to specify module aliases on its dependencies?

If not, is it possible for a package to specify module aliases for its local internal libraries so that every package doesn't need to add unnecessary prefixes to ensure globally unique target names across the entire ecosystem?