update sdk to pass location in postmessage

[cb-jake]

Summary

When connecting to the dapp browser with linkdrop pathname and query params did not persist. This includes the full location for keysdot to process

How did you test your changes?

1. Start keysdot (See corresponding PR on keys side) and sdk playground.
2. Set the keys url to localhost
3. Using the sim (needs cbw mobile on it) or ngrok with actual device, open the playground in a browser window. (add some random query params)
4. Open the onboarding flow and select mobile. This should open in the dapp browser. Verify the query params persist.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[arjun-dureja]

lgtm