fix(keyboard): inputType for Enter on contenteditable

[ph-fritsche]

What:

Dispatch input event with inputType: 'insertParagraph' on contenteditable if shiftKey: false.

Fix an exception if getSelectionRange is called on contenteditable and Selection.rangeCount === 0

Why:

Closes #605

Checklist:

• N/A Documentation
• Tests
• N/A Typings
• Ready to be merged

[codecov]

Codecov Report

Merging #614 (05a49d5) into master (4c3d3cf) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #614   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           47        47           
  Lines          880       884    +4     
  Branches       330       333    +3     
=========================================
+ Hits           880       884    +4     

Impacted Files	Coverage Δ
src/keyboard/plugins/character.ts	100.00% <100.00%> (ø)
src/utils/edit/getSelectionRange.ts	100.00% <100.00%> (ø)

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[github-actions]

🎉 This PR is included in version 13.0.9 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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