fix(core): optimize sidebar workspace card and avatar (#6324)

- adjust avatar size
- unlogged avatar dark-mode
- fix Tooltip console error
- optimize syncing status animation

packages/frontend/core/public/imgs/unknown-user.svg

@@ -1,17 +0,0 @@
-<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
-  <g clip-path="url(#clip0_19485_742)">
-    <rect width="20" height="20" rx="10" fill="currentColor" fill-opacity="0.1" />
-    <path
-      d="M10 10.9999C12.0829 10.9999 13.7714 9.29858 13.7714 7.1999C13.7714 5.10122 12.0829 3.3999 10 3.3999C7.91709 3.3999 6.22857 5.10122 6.22857 7.1999C6.22857 9.29858 7.91709 10.9999 10 10.9999Z"
-      fill="currentColor" fill-opacity="0.3" />
-    <path
-      d="M1.5 22.3999C1.33431 22.3999 1.19948 22.2649 1.20496 22.0993C1.36224 17.3416 5.23972 13.5332 10 13.5332C14.7603 13.5332 18.6378 17.3416 18.795 22.0993C18.8005 22.2649 18.6657 22.3999 18.5 22.3999H1.5Z"
-      fill="currentColor" fill-opacity="0.3" />
-  </g>
-  <defs>
-    <clipPath id="clip0_19485_742">
-      <rect width="20" height="20" rx="10" fill="white" />
-    </clipPath>
-  </defs>
-</svg>
-