Bug 30622: Patron search when placing hold should redirect if cardnumber is entered

Bug 30622: Patron search when placing hold should redirect if cardnumber is entered

When search a patron for placing a hold, if a cardnumber is entered we
should pick the patron and use it, instead of display the table result.

This was a regression caused by bug 30063.

Test plan:
- Place a hold on anything in staff
- Search for 42 or any other existing cardnumber in your database

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>