Revert "Values without a backing env var should not be expanded (#368)" (#371)

This reverts commit 911fc5a223.

.github/workflows/unit.yml

@@ -1,21 +0,0 @@
-name: Run Unit Tests
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-
-jobs:
-  build:
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v4
-      - name: Setup Go
-        uses: actions/setup-go@v4
-        with:
-          go-version: '1.22.x'
-      - name: Install dependencies
-        run: go mod download
-      - name: Test with the Go CLI
-        run: go test -v ./...