fix: Fix backroom back from login context issue

[alvarodE]

Motivation and context

We have a bug in Backroom in which if after performing a query the user logs in, when returning to the Search layer Backroom context is not updated.

This is because the Backroom context was only updated with the SearchRequestChangedevent but that event is not fired in the first search if loaded from the URL; adding a single line on the ParamsLoadedFromUrl fixes the issue.

• Open issue: https://searchbroker.atlassian.net/browse/PBU-31

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that causes existing functionality to not work as expected)
• Change requires a documentation update

What is the destination branch of this PR?

• Main

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review on my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

[alvarodE]

Not specifically part of this fix but we also want to include the missing Playboard link in Backroom.

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[github-actions]

Check PR 492 preview 👀

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