feat!: rename @payloadcms/ui/client to @payloadcms/ui, and other auto-suggestion & exports improvements (#6848)

**BREAKING:** All `@payloadcms/ui/client` exports have been renamed to
`@payloadcms/ui`. A simple find & replace across your entire project
will be enough to migrate. This change greatly improves import
auto-completions in IDEs which lack proper support for package.json
exports, like Webstorm.

packages/richtext-slate/src/field/elements/link/Button/index.tsx

@@ -2,13 +2,7 @@
 
 import type { FormState } from 'payload'
 
-import {
-  useConfig,
-  useDrawerSlug,
-  useFieldProps,
-  useModal,
-  useTranslation,
-} from '@payloadcms/ui/client'
+import { useConfig, useDrawerSlug, useFieldProps, useModal, useTranslation } from '@payloadcms/ui'
 import { getFormState, reduceFieldsToValues } from '@payloadcms/ui/shared'
 import React, { Fragment, useState } from 'react'
 import { Editor, Range, Transforms } from 'slate'