Handle JSX elements with spread operator with remove-jsx-attribute plugin

[snags88]

Summary

With the remove-jsx-attribute plugin, if you run an element with a spread operator, it would throw an exception because the JSXSpreadAttribute AST node does not have a name attribute.

In order to allow continue checking for removal of attributes, the PR updates the code so that we make sure that there is a node name to check before we make the comparison to remove it.

Test plan

Wrote a test with a JSX element with spread operator. It failed before the code modification and passes afterwards.

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[codecov]

Codecov Report

Merging #231 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #231      +/-   ##
==========================================
+ Coverage   85.33%   85.36%   +0.03%     
==========================================
  Files          29       29              
  Lines         450      451       +1     
  Branches      127      127              
==========================================
+ Hits          384      385       +1     
  Misses         55       55              
  Partials       11       11

Impacted Files	Coverage Δ
...ges/babel-plugin-remove-jsx-attribute/src/index.js	100% <100%> (ø)	⬆️

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[gregberge]

@snags88 thanks for the fix!