Change order that booking page prefills information

[joeauyeung]

What does this PR do?

Based on the priority of issue #2823 I changed the order that the booking page prefills information. The new order is the following

• URL params
• Session user if not the owner of the event type
• Blank

Fixes #2823

https://www.loom.com/share/c1d21e3279084a6b923de6f5b6bec0d3

Environment: Staging(main branch) / Production

Type of change

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

How should this be tested?

• Log in as the pro user

• Preview an event type and on the booking page it should be blank

• Add a URL param (email or name) and the booking page should now have that information

• Log in as a free user and visit the pro user's booking page

• The free user's information should be prefilled

• Add a URL param (email or name) and the booking page should be filled with that information

Checklist

• I haven't added tests that prove my fix is effective or that my feature works
• I haven't checked if new and existing unit tests pass locally with my changes

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