Fix chat context issues in camera, temperature, humidity, light commands

[Pierre-Gilles]

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Description of change

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[codecov]

Codecov Report

Merging #1177 (7d610c6) into master (63de819) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1177      +/-   ##
==========================================
+ Coverage   96.30%   96.33%   +0.02%     
==========================================
  Files         640      640              
  Lines        8145     8155      +10     
==========================================
+ Hits         7844     7856      +12     
+ Misses        301      299       -2     

Impacted Files	Coverage Δ
server/lib/device/camera/camera.command.js	94.11% <100.00%> (+19.11%)	⬆️
.../device/humidity-sensor/humidity-sensor.command.js	100.00% <100.00%> (ø)
server/lib/device/light/light.command.js	100.00% <100.00%> (ø)
...e/temperature-sensor/temperature-sensor.command.js	80.00% <100.00%> (ø)

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