Fix Event Measurement Completed: "toolName" is undefined

[lecion]

• Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines

• [x] Tests for the changes have been added (for bug fixes / features)

• [ ] Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) Bug fix

• What is the current behavior? (You can also link to an open issue here) https://github.com/cornerstonejs/cornerstoneTools/issues/1462

• What is the new behavior (if this is a feature change)? Event Measurement Completed: "toolName" is correct

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?) No

[codecov[bot]]

Codecov Report

Merging #1502 (5753d64) into master (925a3dd) will not change coverage. The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1502   +/-   ##
=======================================
  Coverage   21.70%   21.70%           
=======================================
  Files         287      287           
  Lines       10137    10137           
  Branches     2081     2081           
=======================================
  Hits         2200     2200           
  Misses       6750     6750           
  Partials     1187     1187           

Impacted Files	Coverage Δ
src/util/findAndMoveHelpers.js	8.57% <0.00%> (ø)

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more