Decouple twenty-ui Avatar from app server-URL config (#21968)

Makes `twenty-ui`'s `Avatar` render the `avatarUrl` it receives instead
of building it from `window._env_`/`window.location` at module load, so
the library no longer depends on the app environment. URL resolution
moves to `twenty-front` via a `getAbsoluteImageUrl` helper applied at
the call sites.

Part of making twenty-ui a standalone library.

packages/twenty-ui/src/data-display/Avatar/Avatar.tsx

@@ -8,9 +8,7 @@ import { type AvatarType } from '@ui/data-display/Avatar/types/AvatarType';
 import { type IconComponent } from '@ui/icon/types/IconComponent';
 import { ThemeContext } from '@ui/theme-constants';
 import { stringToThemeColorP3String } from '@ui/utilities';
-import { REACT_APP_SERVER_BASE_URL } from '@ui/utilities/config';
 import { type Nullable } from '@ui/utilities/types/Nullable';
-import { getImageAbsoluteURI } from '@ui/utilities/utils/getImageAbsoluteURI';
 
 import styles from './Avatar.module.scss';
 
@@ -49,12 +47,7 @@ export const Avatar = ({
     string | null
   >(null);
 
-  const avatarImageURI = isNonEmptyString(avatarUrl)
-    ? getImageAbsoluteURI({
-        imageUrl: avatarUrl,
-        baseUrl: REACT_APP_SERVER_BASE_URL,
-      })
-    : null;
+  const avatarImageURI = isNonEmptyString(avatarUrl) ? avatarUrl : null;
 
   const placeholderFirstChar = placeholder?.trim()?.charAt(0);
   const isPlaceholderFirstCharEmpty =