fix(viewer): block events to viewer when measurement tool is active

[haakonflatval-cognite]

Type of change

Jira ticket 📘

https://cognitedata.atlassian.net/browse/UX-1291

Description 📝

Measurement tool now blocks pointerdown events targeted at the viewer canvas to prevent click events in viewer when measuring.

How has this been tested? 🔍

Test instructions ℹ️

Checklist ☑️

• I am proud of this feature.
• I have performed a self-review of my own code.
• I have added PR type (Feat, Bug, Chore, Test, Docs, Style, Refactor) to the PR title.
• I have manually tested this for different scenarios (different models, formats, devices, browsers).
• I have commented my code in hard-to-understand areas.
• I have made corresponding changes to the public documentation.
• I have added unit and visuals tests to prove that my feature works to the best of my ability.
• I have refactored the code for readability to the best of my ability.
• I have checked that my changes do not introduce regressions in the public documentation.
• I have outlined any known defects / lacking capabilities in the contents of this PR.
• I have listed any remaining work that should follow this PR in the description or jira/miro/etc.
• I have added TSDoc to any public facing changes.
• I have added "developer documentation" in any package README.md that is related / applicable to this PR.
• I have noted down and am currently tracking any technical debt introduced in this PR.
• I have thoroughly thought about the architecture of this implementation.
• I have asked peers to test this feature.

[codecov]

Codecov Report

Merging #3616 (e1144f4) into master (50abee3) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #3616      +/-   ##
==========================================
- Coverage   71.68%   71.66%   -0.02%     
==========================================
  Files         346      346              
  Lines       33669    33673       +4     
  Branches     2643     2641       -2     
==========================================
- Hits        24135    24133       -2     
- Misses       9430     9436       +6     
  Partials      104      104              

Files Changed	Coverage Δ
.../packages/tools/src/Measurement/MeasurementTool.ts	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes