Cypress. Fix case "Image rotate" for Firefox. (#2857)

* Cypress. Fix case 5 for Firefox.

* Decrease time to wait. Add condition.

* Remove wait().

Add an additional click on the canvas for hide the popover.

tests/cypress/integration/actions_tasks_objects/case_5_image_rotate.js

@@ -11,11 +11,14 @@ context('Check if the image is rotated', () => {
 
     function imageRotate(direction = 'anticlockwise') {
         cy.get('.cvat-rotate-canvas-control').trigger('mouseover');
+        cy.get('.cvat-rotate-canvas-popover-visible').should('exist');
         if (direction === 'clockwise') {
             cy.get('.cvat-rotate-canvas-controls-right').click();
         } else {
             cy.get('.cvat-rotate-canvas-controls-left').click();
         }
+        cy.get('.cvat-canvas-container').click(); // Hide popover
+        cy.get('.cvat-rotate-canvas-popover-visible').should('not.exist');
     }
 
     function scaleFitImage() {
@@ -32,6 +35,7 @@ context('Check if the image is rotated', () => {
                 scaleAfter = Number($styles.match(/scale\((\d\.\d+)\)/m)[1]);
                 cy.expect(scaleBefore).to.be.greaterThan(scaleAfter);
                 cy.get('#cvat_canvas_content').dblclick();
+                cy.get('.cvat-rotate-canvas-popover-visible').should('not.exist');
                 cy.get('#cvat_canvas_background').should('have.attr', 'style').and('contain', scaleBefore);
             });
     }