Upgrade frontend toolchain to latest majors

Bump React 19.2, Relay 21, React Router 8, Vite 8 with
@vitejs/plugin-react 6, ESLint 10, GraphQL 17, TypeScript 6,
@types/node 24, and Tailwind 4.3 across the workspaces.

vite-plugin-react 6 (Vite 8) no longer runs Babel, so the Relay
tagged-template transform now runs through @rolldown/plugin-babel
in the console and trust Vite configs.

Relay 21 ships first-party types and enables the ambiguous-alias
check by default; disable that flag to preserve existing queries
and add explicit usePreloadedQuery type arguments where the new
types no longer infer the operation. TypeScript 6 deprecations and
stricter inference are addressed in tsconfigs and call sites.

Keep n8n-node on ESLint 9 and eslint-plugin-react on 7.37.5, the
newest releases compatible with their toolchains.

Signed-off-by: Émile Ré <emile@probo.com>

packages/eslint-config/src/reactConfigs.ts

@@ -31,7 +31,10 @@ export const reactConfigs: FlatConfig.ConfigArray = [
   {
     settings: {
       react: {
-        version: "detect",
+        // Pin an explicit version: eslint-plugin-react@7.37.5 predates ESLint 10
+        // and its "detect" path calls the removed context.getFilename(), which
+        // crashes under ESLint 10.
+        version: "19.2",
       },
     },
   },