test(install): preload Compression assembly for PS 5.1 ZipArchiveMode

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What does this PR do?

Refresh of #125295 (closed stale) onto current main.

The bundle-smoke-metadata PowerShell test shells powershell.exe
(Windows PowerShell 5.1), but its asset only preloads
System.IO.Compression.FileSystem. The ZipArchiveMode enum lives in
System.IO.Compression, which 5.1 does not resolve implicitly (PowerShell 7
does) — so every run dies before any assertion with Unable to find type [IO.Compression.ZipArchiveMode]. One-line fix in the test asset; the module
under test uses XML types only and is untouched.

Evidence (Windows 11, Windows PowerShell 5.1.26100.9587)

powershell.exe -NoProfile -ExecutionPolicy Bypass -File tests/install/e2e-assets/windows-bundle-metadata.test.ps1

• base main: TypeNotFound — InvalidOperation: (IO.Compression.ZipArchiveMode:TypeName)
  before any assertion runs.
• this branch: PASS: MSIX identity/executable and MSIXBUNDLE native-slice admission.

Related Issue

Fixes #125294

Type of Change

• ✅ Tests (adding or improving test coverage)

Changes Made

• tests/install/e2e-assets/windows-bundle-metadata.test.ps1: preload
  System.IO.Compression before System.IO.Compression.FileSystem
  (re-loading an already-loaded assembly is a no-op, so PS 7 behavior is
  unchanged).

How to Test

1. powershell.exe -NoProfile -ExecutionPolicy Bypass -File tests/install/e2e-assets/windows-bundle-metadata.test.ps1
2. node_modules/.bin/vitest run bundle-smoke-metadata.test.mjs -t "PowerShell admits only the pinned package"

Before: TypeNotFound at windows-bundle-metadata.test.ps1:11.
After: PASS: MSIX identity/executable and MSIXBUNDLE native-slice admission
standalone, 1 passed in the harness.

Checklist

Code

• I've read the Contributing Guide
• My commit messages follow Conventional Commits (fix(scope):, feat(scope):, etc.)
• I searched for existing PRs to make sure this isn't a duplicate
• My PR contains only changes related to this fix/feature (no unrelated commits)
• I've run pytest tests/ -q and all tests pass — N/A (JS/PS asset only; ran the asset standalone instead)
• I've added tests for my changes (required for bug fixes, strongly encouraged for features) — the fixed test itself is the coverage; it failed before, passes after
• I've tested on my platform: Windows 11, Windows PowerShell 5.1.26100.9587

Documentation & Housekeeping

• I've updated relevant documentation (README, docs/, docstrings) — or N/A
• I've updated cli-config.yaml.example if I added/changed config keys — or N/A
• I've updated CONTRIBUTING.md or AGENTS.md if I changed architecture or workflows — or N/A
• I've considered cross-platform impact (Windows, macOS): re-adding an already-loaded assembly is a no-op on PS 7, and non-Windows runners never execute this asset
• I've updated tool descriptions/schemas if I changed tool behavior — or N/A

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Closing — not pursuing this batch.