Add native-input param to Duck.ai URL

[joshliebe]

Task/Issue URL: https://app.asana.com/1/137249556945/project/488551667048375/task/1214899543892734?focus=true

Description

• When the native input is enabled, adds a new parameter to Duck.ai URL → ?native-input=true

Steps to test this PR

With the native input enabled

• Point at the Duck.ai URL linked in the task
• Tap on Duck.ai
• Verify that the initial loading glitch is gone

---

Note

Low Risk
Low risk: only adjusts Duck.ai URL construction to optionally add a query parameter, with unit tests covering the new cases.

Overview
Duck.ai navigation now conditionally appends native-input=true to all constructed/opened Duck.ai chat URLs when the native input field user setting is enabled.

This is centralized via a new nativeInputParameters() helper in RealDuckChat, and is covered by new tests validating URL output for standard, prefilled, voice, and getDuckChatUrl flows.

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[joshliebe]

• Add native-input param to Duck.ai URL #8598 👈 (View in Graphite)
• develop

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[malmstein]

Works as expected. Thanks @joshliebe !