feat(ui): improve workflow elements scroll area

ui/package-lock.json

@@ -13,6 +13,7 @@
         "ahooks": "^3.8.4",
         "antd": "^5.23.1",
         "antd-zod": "^6.0.1",
+        "clsx": "^2.1.1",
         "cron-parser": "^4.9.0",
         "file-saver": "^2.0.5",
         "i18next": "^24.2.1",
@@ -27,6 +28,7 @@
         "react-dom": "^18.3.1",
         "react-i18next": "^15.4.0",
         "react-router-dom": "^7.1.3",
+        "tailwind-merge": "^2.6.0",
         "zod": "^3.24.1",
         "zustand": "^5.0.3"
       },
@@ -4124,6 +4126,14 @@
       "resolved": "https://registry.npmmirror.com/classnames/-/classnames-2.5.1.tgz",
       "integrity": "sha512-saHYOzhIQs6wy2sVxTM6bUDsQO4F50V9RQ22qBpEdCW+I+/Wmke2HOl6lS6dTpdxVhb88/I6+Hs+438c3lfUow=="
     },
+    "node_modules/clsx": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmmirror.com/clsx/-/clsx-2.1.1.tgz",
+      "integrity": "sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/commander": {
       "version": "4.1.1",
       "resolved": "https://registry.npmmirror.com/commander/-/commander-4.1.1.tgz",
@@ -8563,6 +8573,15 @@
       "integrity": "sha512-Nk8c4lXvMB98MtbmjX7JwJRgJOL8fluecYCfCeYBznwmpOs8Bf15hLM6z4z71EDAhQVrQrI+wt1aLWSXZq+hXA==",
       "dev": true
     },
+    "node_modules/tailwind-merge": {
+      "version": "2.6.0",
+      "resolved": "https://registry.npmmirror.com/tailwind-merge/-/tailwind-merge-2.6.0.tgz",
+      "integrity": "sha512-P+Vu1qXfzediirmHOC3xKGAYeZtPcV9g76X+xg2FD4tYgR71ewMA35Y3sCz3zhiN/dwefRpJX0yBcgwi1fXNQA==",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/dcastil"
+      }
+    },
     "node_modules/tailwindcss": {
       "version": "3.4.17",
       "resolved": "https://registry.npmmirror.com/tailwindcss/-/tailwindcss-3.4.17.tgz",