fix(eslint-plugin): [typedef] false positive for rest parameter with array destructuring

[gaonK]

Fixes #2433

[typescript-eslint]

Thanks for the PR, @gaonK!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[codecov]

Codecov Report

Merging #2441 into master will decrease coverage by 0.00%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master    #2441      +/-   ##
==========================================
- Coverage   92.94%   92.93%   -0.01%     
==========================================
  Files         289      289              
  Lines        9272     9275       +3     
  Branches     2583     2585       +2     
==========================================
+ Hits         8618     8620       +2     
  Misses        320      320              
- Partials      334      335       +1     

Flag	Coverage Δ
#unittest	92.93% <66.66%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/eslint-plugin/src/rules/typedef.ts	96.05% <66.66%> (-1.21%)	⬇️

[bradzacher]

ezpz thanks!