Backoffice, fix customer search when searching by first name

[rioug]

What? Why?

Discovered while looking at #11759. Customer search when creating a new order doesn't work with only first name.
Also remove the usage of Jquery.

What should we test?

• Login as an admin
• Visit "Orders" page, and click on "+ new order" button
• Choose a distributor and an ordering cycle and click "Next"
• Search a customer by first name :
  => Find a matching customer

Regression testing:

Follow the scenario above and search by :

• last name
• full name
• email

Release notes

Changelog Category (reviewers may add a label for the release notes):

• User facing changes
• API changes (V0, V1, DFC or Webhook)
• Technical changes only
• Feature toggled

The title of the pull request will be included in the release notes.

[dacook]

Looks good to me 👍

[mkllnk]

Nice! Thank you.

[filipefurtad0]

Hey @rioug ,

Nice, thanks for spotting and fixing this.

Before this PR - searching by first name yielded no results

After this PR - searching by first name

After this PR - searching by last name

After this PR - searching by email

Which corresponds to the expected results.

Looking great!

[filipefurtad0]

I did not spot this on my testing...
EDIT: I'm not sure I think this was introduced here - ping @rioug - but it seems that when searching by email, clicking the results does not fill in the form and triggers a console error. This is verified with and without BUU enabled:

Opening an issue.