Allow non Computer Use supported models to use browser

[SmartManoj]

Workaround for #4697 (comment)

Before:

(hallucinates)

After:

---

Important

Removes supportsComputerUse check in getBrowserActionDescription() to allow all models to use browser actions.

• Behavior:
  • Removes supportsComputerUse check in getBrowserActionDescription() in browser-action.ts, allowing all models to use browser actions.
• Misc:
  • Addresses issue Agent hallucinates image content #4697 by enabling non-computer use models to interact with the browser.

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[daniel-lxs]

This PR bypasses the browser tool security settings.

By removing the supportsComputerUse check, the browser tool description will be shown to ALL models, even when:

• The model doesn't support computer use
• The user has disabled browser tools (browserToolEnabled: false)

This defeats the purpose of the three-layer security model (model support + mode configuration + user setting) and will cause models to hallucinate browser actions they cannot execute.

The existing implementation correctly enforces that only models with supportsComputerUse: true AND user permission (browserToolEnabled) can access browser tools.

[SmartManoj]

#4720