Move permissions block after on block in test.yml for consistency

[Copilot]

Addresses review feedback on #17 to maintain consistent workflow file structure across the repository.

• Moved permissions: block after on: block in .github/workflows/test.yml to match the pattern used in ci.yml and release.yml

# Before
name: Extension Tests
permissions:
  contents: read

on:
  push:
    branches: [ main ]

# After
name: Extension Tests

on:
  push:
    branches: [ main ]

permissions:
  contents: read

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