racing team frontend: consider narrowing search for localuser by email address

[louking]

Message type:       ERROR
Location:           /app/members/views/frontend/racingteam_frontend.py:408
Module:             racingteam_frontend
Function:           get
Time:               2025-02-13 14:58:10,628
User:              *********************

Message:

Traceback (most recent call last):
  File "/app/members/views/frontend/racingteam_frontend.py", line 399, in get
    localuser = LocalUser.query.filter_by(name=name, active=True, **localinterest_query_params()).one()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sqlalchemy/orm/query.py", line 2865, in one
    return self._iter().one()
           ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/result.py", line 1417, in one
    return self._only_one_row(
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/result.py", line 614, in _only_one_row
    raise exc.MultipleResultsFound(
sqlalchemy.exc.MultipleResultsFound: Multiple rows were found when exactly one was required