Cypress. Update case 60 for check fix "Autoborder points are visible for invisible shapes"

[dvkruchinin]

Related: #3931

Motivation and context

Adding a check for "Autoborder points are visible for invisible shapes"

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

[bsekachev]

Hi, how exactly this PR checks that there are not points of hidden shapes in autobordering mode? I see only

cy.get('#cvat_canvas_shape_3').should('be.hidden');

but it does not guarantee us anything regarding the fixed issue.

[dvkruchinin]

Hi, how exactly this PR checks that there are not points of hidden shapes in autobordering mode? I see only

cy.get('#cvat_canvas_shape_3').should('be.hidden');

but it does not guarantee us anything regarding the fixed issue.

Hi.
The main check is on line 97

testAutoborderPointsCount(8); // 8 points at the rectangles

Which checks the number of points after activating autoborder mode.
Before the fix, I got the assert that 8 != 12.