feat(robot-server): Define default deck configurations

[SyntaxColoring]

Overview

Before this PR, if you do GET /deck_configuration on a fresh robot, it returns an empty list. This is confusing and wrong because an empty list is, by our own rules, invalid data for this endpoint.

We need to either:

• Return null, explicitly indicating that there is no deck configuration.
• Return some kind of default.

We discussed this and decided to go with returning a default.

Test Plan

Basic functionality is covered by integration tests.

End-to-end functionality is not covered. By "end-to-end functionality," I mean things like "these defaults let you run all the old protocols that you were running before when you upgrade from v7.0 to v7.1." I'm not sure how to cover that.

Changelog

• Hard-code some default deck configurations for the ot2_standard, ot2_short_trash, and ot3_standard deck definitions.
  • Per discussion, the defaults have a trash in the back-right corner.
  • For immediate convenience, I've defined these in robot-server, in terms of its HTTP-facing Pydantic models. This is definitely wrong: we will need this stuff to be in api instead, in order to support opentrons_execute and friends. Moving everything over is for another PR.
• Make GET /deck_configuration return those defaults if the client has not yet issued a PUT /deck_configuration request.

Review requests

• Does this make sense for the OT-2, given its "legacy fixtures" mechanism?

Risk assessment

Low.

[codecov]

Codecov Report

Merging #13990 (eade227) into edge (18addf6) will decrease coverage by 0.01%.
Report is 1 commits behind head on edge.
The diff coverage is 38.46%.

Additional details and impacted files

@@            Coverage Diff             @@
##             edge   #13990      +/-   ##
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- Coverage   70.64%   70.64%   -0.01%     
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  Files        2506     2506              
  Lines       70932    70937       +5     
  Branches     8781     8783       +2     
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+ Hits        50112    50115       +3     
- Misses      18663    18665       +2     
  Partials     2157     2157              

Flag	Coverage Δ
app	67.66% <ø> (ø)
protocol-designer	45.66% <0.00%> (-0.02%)	⬇️
shared-data	73.60% <100.00%> (+0.02%)	⬆️
step-generation	86.60% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...-server/robot_server/runs/router/actions_router.py	100.00% <ø> (ø)
...bot-server/robot_server/runs/router/base_router.py	96.33% <ø> (ø)
...data/python/opentrons_shared_data/deck/__init__.py	65.62% <100.00%> (+3.55%)	⬆️
...l-designer/src/components/DeckSetup/SlotLabels.tsx	0.00% <0.00%> (ø)
...igner/src/components/modules/StagingAreasModal.tsx	43.13% <0.00%> (+0.82%)	⬆️
...otocol-designer/src/components/DeckSetup/index.tsx	0.00% <0.00%> (ø)

[CaseyBatten]

Changes all sensible - ran end to end on RSS Flex and successfully returned a default Deck value on GET all, was overwritten on a PUT call, and maintained through subsequent JSON Protocol runs during that session referencing non-default areas on the deck.