Safe inserts of search maps into database

[stephen-riggs]

We currently run a .one() on search maps, grid squares and foil holes in the database.
If there is already one, but the ispyb insert fails we trigger the except clause and end up inserting a second one, which then keeps crashing and inserting more as the .one() fails.

The except on these inserts has been removed in this PR and instead an .all() is run on the values and the first one taken.
If the ispyb update fails this should then fall through to the outer try-except in the feedback.py

[codecov]

Codecov Report

❌ Patch coverage is 70.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.00%. Comparing base (26e2f89) to head (235b805).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #754   +/-   ##
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  Coverage   48.00%   48.00%           
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  Files          91       91           
  Lines        9909     9909           
  Branches     1278     1281    +3     
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  Hits         4757     4757           
  Misses       4930     4930           
  Partials      222      222           

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