Alter the target link for installed app?

[Zorakie]

So I have this problem:
I need to use MS Teams under a different (client's) tenant, that tenant blocks adding the account to the standalone app.

Current solution:

1. Install Containers
2. Install Containerise
3. Set regexp in Containerise
   Outcome -> every time I open a specific URL, it gets automagically opened in the defined container -> WORKS

Issue: Lots of tabs, lots of windows.
Solution? Install as app.

Problem:

The URL is like https://teams.microsoft.com.mcas.ms/v2/?tenantid=XXXXX-XXXX-XXXX-XXXX-XXXXXXXXX

When I click to install as an app, it IGNORES completely all the parameters and it isntalls the app as base URL only.
That means, whenever I open the app, it gets opened in the no-container, and that means it opens my base company tenant of teams, instead of the client tenant, that I am SSOed in in my other container.

I have checked the link that is created, but it shows only like "C:\Program Files\Ablaze Floorp\floorp.exe" "-profile" "C:\Users\USER\AppData\Roaming\Floorp\Profiles\xnpihn7m.default-release" "-start-ssb" "{b2fd9ad4-d523-480c-bc5c-1ced2b6e26b4}"

so there I cannot update/enforce the tenant parameter to the app, that would open the floorp window, activate the regexp in the Containerise and switched to the containered session with my client SSO.

Is there any way to open/edit that installed up and update the link somewhere inside?

Thanks!