feat!: updated admin UI (#7424)

## Description

- Updates admin UI with more condensed spacing throughout.
- Improves hover states and read-only states for various components.
- Removes the `Merriweather` font from `next/font` and replaces with
stack of system serif fonts and fallbacks (Georgia, etc). Closes #7257

## BREAKING CHANGES
- Custom components and styling that don't utilize Payload's CSS/SCSS
variables may need adjustments to match the updated styling.
- If you are using the `Merriweather` font, you will need to manually
configure `next/font` in your own project.

---------

Co-authored-by: Paul Popus <paul@nouance.io>

test/_community/e2e.spec.ts

@@ -7,7 +7,7 @@ import { fileURLToPath } from 'url'
 import { ensureCompilationIsDone, initPageConsoleErrorCatch } from '../helpers.js'
 import { AdminUrlUtil } from '../helpers/adminUrlUtil.js'
 import { initPayloadE2ENoConfig } from '../helpers/initPayloadE2ENoConfig.js'
-import { TEST_TIMEOUT_LONG } from '../playwright.config.js'
+import { TEST_TIMEOUT } from '../playwright.config.js'
 
 const filename = fileURLToPath(import.meta.url)
 const dirname = path.dirname(filename)
@@ -17,7 +17,7 @@ test.describe('Admin Panel', () => {
   let url: AdminUrlUtil
 
   test.beforeAll(async ({ browser }, testInfo) => {
-    testInfo.setTimeout(TEST_TIMEOUT_LONG)
+    testInfo.setTimeout(TEST_TIMEOUT)
 
     const { payload, serverURL } = await initPayloadE2ENoConfig({ dirname })
     url = new AdminUrlUtil(serverURL, 'posts')