fix: forceSuggestionsAboveCursor when suggestionsPortalHost is not being used

[stefansundin]

Fix forceSuggestionsAboveCursor when suggestionsPortalHost is not being used. Mistake in #449.

Here's a quick repro: https://codesandbox.io/s/react-mentions-forcesuggestionsabovecursor-bug-bq1x0?file=/src/App.js

Resize your browser window so that the suggestions do not fit above the input field to trigger the bug.

Let me know if you need anything else for this fix. Thanks!

By the way, the links on the releases page are not clickable. They render like this: http://git+https/github.com/signavio/react-mentions/issues/492. Is this intentional?

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.84%. Comparing base (a2c8856) to head (2b94444).
Report is 78 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #507   +/-   ##
=======================================
  Coverage   78.84%   78.84%           
=======================================
  Files          32       32           
  Lines         695      695           
  Branches      108      108           
=======================================
  Hits          548      548           
  Misses        146      146           
  Partials        1        1           

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[Sigrsig]

Looks good, thank you for contributing!