Track access side effects when using object spread operator

[lukastaegert]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:
Resolves #4093

Description

This will additionally check for getter side effects when using the spread operator on an object.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@1dd8ba7). Click here to learn what that means.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master    #4113   +/-   ##
=========================================
  Coverage          ?   98.11%           
=========================================
  Files             ?      201           
  Lines             ?     7061           
  Branches          ?     2064           
=========================================
  Hits              ?     6928           
  Misses            ?       64           
  Partials          ?       69           

Impacted Files	Coverage Δ
src/ast/nodes/SpreadElement.ts	100.00% <100.00%> (ø)

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[github-actions]

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rollup/rollup#gh-4093-object-spread-side-effect

or load it into the REPL:
https://rollupjs.org/repl/?pr=4113