Don't use 'EachNew' in ForceTorque PreUpdate function

[mjcarroll]

🦟 Bug fix

Split from #1471 to address force-torque sensor incrementally.
Partially addresses #797

Summary

Not all sensor system implementations were updated as part of #1281, one of which being the ForceTorqueSensor. This makes the reset behavior incorrect and the sensor won't be respawned.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #1523 (83b8e5e) into main (a3cbd8c) will decrease coverage by 0.04%.
The diff coverage is 99.31%.

❗ Current head 83b8e5e differs from pull request most recent head c40453a. Consider uploading reports for the commit c40453a to get more accurate results

@@            Coverage Diff             @@
##             main    #1523      +/-   ##
==========================================
- Coverage   63.62%   63.58%   -0.05%     
==========================================
  Files         330      330              
  Lines       25787    25942     +155     
==========================================
+ Hits        16408    16494      +86     
- Misses       9379     9448      +69     

Impacted Files	Coverage Δ
include/gz/sim/EventManager.hh	79.16% <ø> (ø)
include/gz/sim/Util.hh	100.00% <ø> (ø)
include/gz/sim/components/Factory.hh	97.53% <80.00%> (-1.18%)	⬇️
include/gz/sim/EntityComponentManager.hh	100.00% <100.00%> (ø)
include/gz/sim/Link.hh	100.00% <100.00%> (ø)
include/gz/sim/Model.hh	100.00% <100.00%> (ø)
include/gz/sim/SdfEntityCreator.hh	100.00% <100.00%> (ø)
include/gz/sim/Server.hh	100.00% <100.00%> (ø)
include/gz/sim/ServerConfig.hh	100.00% <100.00%> (ø)
include/gz/sim/SystemLoader.hh	100.00% <100.00%> (ø)
... and 132 more

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[chapulina]

LGTM, I just have some minor comments.

It would be ideal to target this at Fortress and forward-port, to reduce the diff between the branches. If it's easier for you we can also backport this after merged.

[chapulina]

LGTM with the return comment addressed, and the other comment is up to you.

[mjcarroll]

@osrf-jenkins retest this please