Fix extension activation circular dependency

[ConnorQi01]

Summary

• Fix the extension activation circular dependency by routing project node_modules lookup through ProjectsStorage and deferring runtime debugger dependencies.
• Ensure the extension is explicitly activated before asserting registered commands.
• Keep test process cleanup separate in [Bug] Extension tests leak adb and browser processes #2855.

Validation

• npx prettier --check
• npm run build
• npx gulp webpack-bundle
• commandsRegistered test passes
• Process cleanup and real adb/browser test isolation are tracked separately in [Bug] Extension tests leak adb and browser processes #2855.

Closes #2839

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[ConnorQi01]

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