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

packages/shared-components/package.json

@@ -87,7 +87,6 @@
     },
     "devDependencies": {
         "@element-hq/element-web-playwright-common": "workspace:*",
-        "@element-hq/vite-common": "workspace:*",
         "@fetch-mock/vitest": "^0.2.18",
         "@fontsource/inter": "catalog:",
         "@matrix-org/react-sdk-module-api": "^2.5.0",
@@ -111,7 +110,6 @@
         "@typescript-eslint/parser": "^8.53.1",
         "@vector-im/compound-web": "catalog:",
         "@vitest/browser-playwright": "catalog:",
-        "@vitest/coverage-v8": "catalog:",
         "eslint": "8",
         "eslint-config-google": "^0.14.0",
         "eslint-config-prettier": "^10.1.8",