Local NTP: fix doodle expanding outside of the container

Bug: 1091394
Change-Id: Ia9c32ffeab2d6992c9db6ff86d22c89dd262bdb0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2231541
Auto-Submit: Esmael Elmoslimany <aee@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775316}

chrome/browser/resources/local_ntp/doodles.css

@@ -3,9 +3,8 @@
  * found in the LICENSE file. */
 
 #logo {
-  height: calc(var(--logo-height) + var(--logo-margin-bottom));
   margin-top: var(--logo-margin-top);
-  min-height: fit-content;
+  min-height: calc(var(--logo-height) + var(--logo-margin-bottom));
   position: relative;
 }