Fix cypress test "Changing label name via label constructor".

[dvkruchinin]

Motivation and context

An error occurred in CI when passing the test steps

`<button type="submit" class="ant-btn ant-btn-primary ant-tooltip-open" ant-click-animating-without-extra-node="false" style="width: 150px;">...</button>`
This element `<button.ant-btn.ant-btn-primary.ant-tooltip-open>` is not visible because it has CSS property: `position: fixed` and it's being covered by another element:
`<div class="ant-tooltip ant-tooltip-placement-top " style="left: 277px; top: 493px; transform-origin: 50% 46px;">...</div>`

Added force: true when the button is clicked.

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG file
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (read github docs)
• I have increased versions of npm packages if it is necessary (cvat-canvas,
  cvat-core, cvat-data and cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT