Consolidate vitest CI & coverage (#33808)

* Consolidate modules vitest coverage

* Use vite-common as base for modules vitest config

* Make knip happier

* Fix coverage paths

* Place modules unit tests alongside src

* Switch to defineProject for better type safety

* Consolidate vitest CI & coverage

Kills off vite-common

* Update comment

* Update lockfile

* Fix shared-components vitest config

* Soften eslint config for tests in modules

* Run eslint on modules/playwright dir too

* Make tsc happy

modules/widget-toggles/vitest.config.ts

@@ -5,25 +5,18 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE files in the repository root for full details.
 */
 
-import { defineConfig } from "vitest/config";
+import { defineProject } from "vitest/config";
 import { playwright } from "@vitest/browser-playwright";
 
-export default defineConfig({
+export default defineProject({
     test: {
-        include: ["tests/**/*.test.{ts,tsx}"],
         exclude: ["./e2e/**/*", "./node_modules/**/*"],
-        reporters: ["default"],
-        coverage: {
-            provider: "v8",
-            include: ["src/**/*.ts"],
-            reporter: [["lcov", { projectRoot: "../../" }], "text"],
-        },
         browser: {
             enabled: true,
             headless: true,
             provider: playwright({}),
             instances: [{ browser: "chromium" }],
         },
-        setupFiles: ["tests/setupTests.ts"],
+        setupFiles: ["src/tests/setupTests.ts"],
     },
 });