Fixed font-size in firefox (#4026)

* Fixed font-size in firefox

* Updated versions

cvat-canvas/package-lock.json

 {
   "name": "cvat-canvas",
-  "version": "2.10.1",
+  "version": "2.10.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "cvat-canvas",
-      "version": "2.10.1",
+      "version": "2.10.2",
       "license": "MIT",
       "dependencies": {
         "@types/polylabel": "^1.0.5",

cvat-canvas/package.json

 {
   "name": "cvat-canvas",
-  "version": "2.10.1",
+  "version": "2.10.2",
   "description": "Part of Computer Vision Annotation Tool which presents its canvas library",
   "main": "src/canvas.ts",
   "scripts": {

cvat-canvas/src/typescript/canvasView.ts

@@ -2075,7 +2075,7 @@ export class CanvasViewImpl implements CanvasView, Listener {
         const textPosition = this.configuration.textPosition || 'auto';
 
         text.untransform();
-        text.style({ 'font-size': textFontSize });
+        text.style({ 'font-size': `${textFontSize}px` });
         const { rotation } = shape.transform();
 
         // Find the best place for a text