Fix undefined attribute warnings on Heroicons component

[nskins]

Output from mix compile --warnings-as-errors:

warning: undefined attribute "data" for component Heroicons.trash/1
  lib/we_lift_web/live/workout_live/show.ex:31: (file)

warning: undefined attribute "phx_value_id" for component Heroicons.trash/1
  lib/we_lift_web/live/workout_live/show.ex:30: (file)

The strange thing is that these warnings only appear when I compile on my local machine. They are not present during CI builds. The CI build is using Elixir v1.14.3 and OTP v25.1 (which matches what I have locally). So I'm not exactly sure why the two environments have a discrepancy.

Regardless, let's do something to resolve the errors in the local environment. It might be that the Heroicons.trash component needs to be wrapped by a div or something (which will then carry the data and phx_value_id attributes). Need to do a little more research to figure out a true fix.