Add postcss-import plugin for postcss check + fix warning (#6691)

* Add postcss-import plugin for postcss check + fix warning

* Update etalons

* Remove test:dev

Author: dk981234

packages/survey-creator-core/package.json

@@ -15,7 +15,7 @@
     "test": "jest",
     "test:cov": "jest --coverage",
     "test:watch": "jest --watch",
-    "test:postcss": "postcss build/survey-creator-core.css --silent  -u postcss-calc -u autoprefixer -u postcss-fail-on-warn -o survey-creator-core.postcss.css && rimraf survey-creator-core.postcss.css",
+    "test:postcss": "postcss build/survey-creator-core.css --silent  -u postcss-calc -u autoprefixer -u postcss-fail-on-warn -u postcss-import -o survey-creator-core.postcss.css && rimraf survey-creator-core.postcss.css",
     "doc_gen": "node doc_generator/editor_docgenerator.js src/entries/index.ts",
     "watch:dev": "concurrently \"webpack --env buildType=dev --watch --env emitDeclarations --env emitStyles\" \"rollup -c -w\" ",
     "watch:prod": "webpack --env buildType=prod --watch",
@@ -55,6 +55,7 @@
     "postcss-calc": "9.0.1",
     "postcss-cli": "10.1.0",
     "postcss-fail-on-warn": "0.2.1",
+    "postcss-import": "^16.1.0",
     "rimraf": "2.5.4",
     "rollup": "^4.34.8",
     "rollup-plugin-license": "^3.6.0",
@@ -75,4 +76,4 @@
     "webpack-merge": "^5.8.0",
     "webpack-remove-empty-scripts": "^1.0.4"
   }
-}
+}

packages/survey-creator-core/src/components/toolbox/toolbox-tool.scss

@@ -426,11 +426,6 @@
     padding-inline-end: var(--ctr-toolbox-item-padding-right-no-text, var(--sjs-spacing-x1));
     box-sizing: border-box;
     align-self: flex-start;
-    &:after {
-      content:"\a0";
-      @include ctrSmallBoldFont;
-      width: 0;
-    }
   }
   .svc-toolbox__tool--dots {
     padding-inline-end: 0;