Fix babel-runtime helpers gererator

[azrael]

Q	A
Patch: Bug Fix?	yes
Major: Breaking Change?	no
Minor: New Feature?	no
Deprecations?	no
Spec Compliancy?	no
Tests Added/Pass?	no
Fixed Tickets	no
License	MIT
Doc PR	no
Dependency Changes	no

Fixed a bug in babel-runtime helper generator where invalid helpers were created and as a result there were the Unterminated string constant errors.

[mention-bot]

@Azrael25, thanks for your PR! By analyzing the history of the files in this pull request, we identified @Kovensky, @hzoo and @loganfsmyth to be potential reviewers.

[codecov]

Codecov Report

Merging #5539 into 7.0 will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              7.0    #5539      +/-   ##
==========================================
- Coverage   85.49%   85.47%   -0.03%     
==========================================
  Files         200      200              
  Lines        9506     9506              
  Branches     2701     2701              
==========================================
- Hits         8127     8125       -2     
- Misses        883      885       +2     
  Partials      496      496

Impacted Files	Coverage Δ
packages/babel-traverse/src/visitors.js	85.71% <0%> (-0.96%)	⬇️
packages/babel-traverse/src/path/context.js	85.34% <0%> (-0.87%)	⬇️

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[hzoo]

Wow good catch