Fix user menu font (#12879)

Author: florianduros

playwright/e2e/user-menu/user-menu.spec.ts

@@ -25,5 +25,6 @@ test.describe("User Menu", () => {
 
         await expect(menu.locator(".mx_UserMenu_contextMenu_displayName", { hasText: user.displayName })).toBeVisible();
         await expect(menu.locator(".mx_UserMenu_contextMenu_userId", { hasText: user.userId })).toBeVisible();
+        await expect(menu).toMatchScreenshot("user-menu.png");
     });
 });

playwright/snapshots/user-menu/user-menu.spec.ts/user-menu-linux.png

@@ -111,7 +111,7 @@ limitations under the License.
 
             .mx_UserMenu_contextMenu_displayName,
             .mx_UserMenu_contextMenu_userId {
-                font: var(--cpd-font-heading-sm-regular);
+                font: var(--cpd-font-body-lg-regular);
 
                 /* Automatically grow subelements to fit the container */
                 flex: 1;