fix(context): when copying use opacity 0 on temp element

[ghiscoding]

• we can just use opacity: 0 (transparent) instead of left: -1000px because on computer with high resolution DPI, it might end up showing the temp element we use to copy and we wouldn't want to show it to the user

[codecov]

Codecov Report

Merging #534 (3f0896f) into master (2721bcb) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #534   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          221       221           
  Lines        14065     14064    -1     
  Branches      4805      4805           
=========================================
- Hits         14065     14064    -1     

Impacted Files	Coverage Δ
...ages/common/src/extensions/contextMenuExtension.ts	100.00% <100.00%> (ø)

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