Fix editor border radius on mobile devices

[adrianspdev]

Context

This PR includes fixes for problem with border radius in editor fields

How has this been tested?

Locally on iOS emulator

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Related issue(s):

1. https://github.com/handsontable/dev-handsontable/issues/2255

Affected project(s):

• handsontable

Checklist:

• I have reviewed the guidelines about Contributing to Handsontable and I confirm that my code follows the code style of this project.
• I have signed the Contributor License Agreement

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 3a5a453:

Sandbox	Source
handsontable-pr-javascript-demo	Configuration
handsontable-ts-demo	Configuration
handsontable-pr-react-demo	Configuration

[budnix]

There is no any test added. Can I ask you to add one?

[github-actions]

Launch the local version of documentation by running:

npm run docs:review 3a5a453ce3404fe007db18326ddaf8587bd6a5ec