test: expand env-var-path coverage #1480

Job	Run time
Tests in Containers (ci-homebrew-container, ubuntu-latest, homebrew/brew, x86_64-unknown-linux-musl)	5m 21s
Tests (macos-latest, x86_64-apple-darwin, yes)	18m 12s
Env Tests (ci-poetry-custom, ubuntu-latest, x86_64-unknown-linux-musl)	2m 50s
Tests in Containers (ci-jupyter-container, ubuntu-latest, mcr.microsoft.com/devcontainers/univers...	6m 25s
Tests (windows-latest, x86_64-pc-windows-msvc, yes)	9m 50s
Tests (ubuntu-latest, x86_64-unknown-linux-musl, yes)	9m 51s
Builds (windows-latest, aarch64-pc-windows-msvc)	4m 58s
Env Tests (ci-poetry-global, windows-latest, x86_64-pc-windows-msvc)	6m 22s
Env Tests (ci-poetry-custom, windows-latest, x86_64-pc-windows-msvc)	5m 55s
Builds (macos-latest, x86_64-apple-darwin, yes)	2m 37s
Tests (macos-14, aarch64-apple-darwin, yes)	15m 2s
Builds (macos-14, aarch64-apple-darwin, yes)	2m 48s
Env Tests (ci-poetry-global, ubuntu-latest, x86_64-unknown-linux-musl)	2m 56s
Builds (ubuntu-latest, x86_64-unknown-linux-musl, yes)	2m 23s
Env Tests (ci-poetry-project, ubuntu-latest, x86_64-unknown-linux-musl)	2m 51s
Builds (windows-latest, x86_64-pc-windows-msvc)	4m 50s
Env Tests (ci-poetry-project, windows-latest, x86_64-pc-windows-msvc)	5m 36s
	1h 48m 47s

Provide feedback