fix(eslint-plugin): [no-misused-promises] fix incorrect detection of void functions in JSX attributes

[bradzacher]

PR Checklist

• Addresses an existing open issue: fixes Bug: [no-misused-promises] false positive with non-promise returning function in JSX #6637
• That issue was marked as accepting prs
• Steps in Contributing were taken

Overview

Dunno how this existed for so long!

[typescript-eslint]

Thanks for the PR, @bradzacher!

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✅ Successfully ran 25 targets

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• Node 18 - nx test type-utils
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• Node 18 - nx test ast-spec
• Node 14 - nx test eslint-plugin-tslint --coverage=false
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[codecov]

Codecov Report

Merging #6638 (75500fc) into main (9eafd87) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6638   +/-   ##
=======================================
  Coverage   85.15%   85.15%           
=======================================
  Files         383      383           
  Lines       13026    13026           
  Branches     3839     3839           
=======================================
  Hits        11092    11092           
  Misses       1572     1572           
  Partials      362      362           

Flag	Coverage Δ
unittest	85.15% <100.00%> (ø)

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

Impacted Files	Coverage Δ
...ges/eslint-plugin/src/rules/no-misused-promises.ts	97.47% <100.00%> (ø)

[bradzacher]

need this for the v6 branch, so jumping the merge queue.