chore: prepend npx to web-test-runner commands in package.json for consistent execution

Author: alexpmule

package.json

@@ -99,10 +99,10 @@
     "format:eslint": "eslint --ext .js,.html . --fix --ignore-path .gitignore",
     "lint": "npm run lint:eslint",
     "format": "npm run format:eslint",
-    "test": "web-test-runner test/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit && npm run test:visual",
-    "test:visual": "web-test-runner test/visual/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit",
-    "test:watch": "web-test-runner test/*.test.js --node-resolve --watch --playwright --browsers chromium",
-    "test:visual:update": "web-test-runner test/**/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit --update-visual-baseline\n",
+    "test": "npx web-test-runner test/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit && npm run test:visual",
+    "test:visual": "npx web-test-runner test/visual/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit",
+    "test:watch": "npx web-test-runner test/*.test.js --node-resolve --watch --playwright --browsers chromium",
+    "test:visual:update": "npx web-test-runner test/**/*.test.js --coverage --node-resolve --playwright --browsers chromium firefox webkit --update-visual-baseline\n",
     "build": "rimraf dist && rollup -c rollup.config.js",
     "build:vendor": "node tasks/prepare.js",
     "build:models": "node demo/model.js",