chore: upgrade Vitest to v5

Update frontend dev tooling to Vitest 5 by bumping `vitest`, `@vitest/browser-playwright`, and `@vitest/coverage-v8`, plus `@types/react-dom`. Add an override for `@storybook/addon-vitest` to pin Vitest-related packages to compatible versions and avoid dependency mismatch issues. Also bump the Go toolchain patch version from `1.27.0` to `1.27.1` in `go.mod`.

frontend/package.json

@@ -64,11 +64,11 @@
     "@testing-library/dom": "^10.4.1",
     "@testing-library/react": "^16.3.3",
     "@types/react": "^19.2.18",
-    "@types/react-dom": "^19.2.5",
+    "@types/react-dom": "^19.2.7",
     "@types/swagger-ui-react": "^5.18.0",
     "@vitejs/plugin-react": "^6.1.1",
-    "@vitest/browser-playwright": "4.1.11",
-    "@vitest/coverage-v8": "^4.1.11",
+    "@vitest/browser-playwright": "5.0.0",
+    "@vitest/coverage-v8": "^5.0.0",
     "husky": "^9.1.7",
     "jsdom": "^30.0.1",
     "lint-staged": "^17.4.1",
@@ -80,7 +80,7 @@
     "storybook": "^10.6.0",
     "typescript": "7.0.2",
     "vite": "8.2.2",
-    "vitest": "^4.1.11"
+    "vitest": "^5.0.0"
   },
   "overrides": {
     "dompurify": "^3.4.11",
@@ -95,6 +95,11 @@
     },
     "@typeschema/valibot": {
       "valibot": "^1.1.0"
+    },
+    "@storybook/addon-vitest": {
+      "vitest": "$vitest",
+      "@vitest/browser-playwright": "$@vitest/browser-playwright",
+      "@vitest/browser": "5.0.0"
     }
   },
   "allowScripts": {