chore(app): refactor the way we check for slot placement

[TamarZanzouri]

Overview

refactor the way we find what slot an AA is assigned to.
minor bug fixes

Test Plan and Hands on Testing

make sure the logic related to adding removing an item from the deck config is working as expected.

Changelog

add a mapping between a AA to a VS

Review requests

changes make sense?

Risk assessment

Medium. should make sure logic was not affected

[codecov]

Codecov Report

Attention: Patch coverage is 38.38384% with 122 lines in your changes missing coverage. Please review.

Project coverage is 25.68%. Comparing base (62399f5) to head (f1d2385).
Report is 5 commits behind head on edge.

Files with missing lines	Patch %	Lines
shared-data/js/fixtures.ts	51.70%	71 Missing ⚠️
.../organisms/DeviceDetailsDeckConfiguration/utils.ts	0.00%	41 Missing ⚠️
...organisms/DeviceDetailsDeckConfiguration/index.tsx	0.00%	5 Missing ⚠️
...DeviceDetailsDeckConfiguration/AddFixtureModal.tsx	0.00%	3 Missing ⚠️
...ocolSetup/ProtocolSetupDeckConfiguration/index.tsx	0.00%	1 Missing ⚠️
...uration/hooks/useDeckConfigurationEditingTools.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             edge   #18752      +/-   ##
==========================================
- Coverage   26.13%   25.68%   -0.45%     
==========================================
  Files        3290     3287       -3     
  Lines      286993   286501     -492     
  Branches    29604    29275     -329     
==========================================
- Hits        75005    73597    -1408     
- Misses     211957   212876     +919     
+ Partials       31       28       -3     

Flag	Coverage Δ
step-generation	5.35% <37.87%> (+<0.01%)	⬆️

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

Files with missing lines	Coverage Δ
...ocolSetup/ProtocolSetupDeckConfiguration/index.tsx	0.00% <0.00%> (ø)
...uration/hooks/useDeckConfigurationEditingTools.tsx	0.00% <0.00%> (ø)
...DeviceDetailsDeckConfiguration/AddFixtureModal.tsx	0.00% <0.00%> (ø)
...organisms/DeviceDetailsDeckConfiguration/index.tsx	0.00% <0.00%> (ø)
.../organisms/DeviceDetailsDeckConfiguration/utils.ts	0.00% <0.00%> (ø)
shared-data/js/fixtures.ts	46.58% <51.70%> (-27.06%)	⬇️

... and 139 files with indirect coverage changes

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[sfoster1]

Looks good overall, solid improvement. Couple small things to fix noted inline. Can you add more information about what a visual slot is to the pr def?