✨ Show the name of objects to be deleted in the confirm delete modals

[mturley]

Applies the pattern from #1333 to the rest of our entity delete confirmation modals.

Note that in order to do this, I needed to refactor away an inconsistent pattern: Some of our delete modals were kept track of with thingIdToDelete as a number in state and isConfirmDialogOpen as a boolean. In order to show the name in the confirm modal, this PR refactors these incidences to store a reference to the whole object thingToDelete instead of just the id. The isConfirmDialogOpen state was also redundant because the confirm modal is always closed when thingToDelete is falsy and open when it's truthy, so this PR also removes those booleans from state and uses thingToDelete as the source of truth.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (3e7ede2) 42.39% compared to head (497efe3) 42.39%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1347   +/-   ##
=======================================
  Coverage   42.39%   42.39%           
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  Files         137      137           
  Lines        4291     4291           
  Branches     1007     1007           
=======================================
  Hits         1819     1819           
  Misses       2460     2460           
  Partials       12       12           

Flag	Coverage Δ
client	42.39% <ø> (ø)
server	∅ <ø> (∅)

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