fix: preserve HAB_AUTH_TOKEN through sudo and fix Windows hab PATH

Linux/macOS: `sudo hab pkg install` was dropping the HAB_AUTH_TOKEN
environment variable because sudo does not preserve env vars by default.
The token was correctly set via `export`, but the hab process running
under sudo never received it, resulting in 401 Unauthorized from Builder.

Fix: use `sudo -E` to preserve the environment across all three
`sudo hab pkg install` invocations (Linux download, Linux build install,
macOS download).

Windows: hab binary was installed to C:\ProgramData\Habitat but that
directory was never added to GITHUB_PATH in the Configure Habitat step,
causing subsequent steps to fail with 'hab is not recognized'.

Fix: add C:\ProgramData\Habitat to GITHUB_PATH.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Nitin Mathur <nmathur@progress.com>

Author: Nik08

.github/workflows/grype-hab-package-scan.yml

@@ -152,7 +152,7 @@ jobs:
             hartifacts=$(ls results/*.hart)
             if [ -f "$hartifacts" ]; then
                 echo "Built package artifact: $hartifacts"
-                sudo hab pkg install $hartifacts
+                sudo -E hab pkg install $hartifacts
             else
                 echo "Error: No .hart file found in results/"
                 exit 1
@@ -189,7 +189,7 @@ jobs:
                 PACKAGE="${PACKAGE}/${{ inputs.hab_release }}"
             fi
             
-            INSTALL_CMD="sudo hab pkg install ${PACKAGE}"
+            INSTALL_CMD="sudo -E hab pkg install ${PACKAGE}"
             
             if [ -n "${{ inputs.hab_channel }}" ]; then
                 INSTALL_CMD="${INSTALL_CMD} --channel ${{ inputs.hab_channel }}"
@@ -296,6 +296,7 @@ jobs:
       - name: Configure Habitat (Windows)
         run: |
             echo "HAB_LICENSE=accept-no-persist" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+            echo "C:\ProgramData\Habitat" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
             New-Item -ItemType Directory -Force -Path "C:\hab\accepted-licenses"
             New-Item -ItemType File -Force -Path "C:\hab\accepted-licenses\habitat"
 
@@ -582,7 +583,7 @@ jobs:
                 PACKAGE="${PACKAGE}/${{ inputs.hab_release }}"
             fi
             
-            INSTALL_CMD="sudo hab pkg install ${PACKAGE}"
+            INSTALL_CMD="sudo -E hab pkg install ${PACKAGE}"
             
             if [ -n "${{ inputs.hab_channel }}" ]; then
                 INSTALL_CMD="${INSTALL_CMD} --channel ${{ inputs.hab_channel }}"