Remove exports field to fix eslint and build errors

[Pytal]

Fix errors in nextcloud/server#34044

The eslint errors import/no-unresolved and node/no-missing-import are due to the lack of support for the exports field, see import-js/eslint-plugin-import#1810 and mysticatea/eslint-plugin-node#255

Switching from

import '@nextcloud/password-confirmation/style.css'

to

import '@nextcloud/password-confirmation/dist/style.css'

fixes the eslint errors but results in new build errors coming from babel-loader

Module not found: Error: Package path ./dist/style.css is not exported from package <path>/node_modules/@nextcloud/password-confirmation (see exports field in <path>/node_modules/@nextcloud/password-confirmation/package.json)

This seems to be because babel-loader uses the exports field exclusively when present

So switching to the dist import in nextcloud/server#34044 and removing the exports field in this package is needed to resolve the errors