Feature/use second level mui imports (#743)

* Require "Theme" to be passed to "SxProps"

Decreases typescript performance otherwise

* Disallow "top" and "third-level" MUI imports

* Exclude "node_modules" in tsconfig

src/lib/ui/AwaitableDialog.tsx

@@ -7,7 +7,7 @@
  */
 
 import { createRoot } from 'react-dom/client';
-import ThemeProvider from '@mui/material/styles/ThemeProvider';
+import { ThemeProvider } from '@mui/material/styles';
 import { ConfirmDialog } from '@/components/molecules/ConfirmDialog.tsx';
 import { ControlledPromise } from '@/lib/ControlledPromise.ts';
 import { getCurrentTheme } from '@/theme.ts';