fix(a11y): WCAG 2.1 AA fixes (#2219)

apps/client/src/lib/utils.tsx

@@ -1,5 +1,4 @@
 import { validate as isValidUUID } from "uuid";
-import { ActionIcon } from "@mantine/core";
 import { IconFileDescription } from "@tabler/icons-react";
 import { ReactNode } from "react";
 import { TFunction } from "i18next";
@@ -87,9 +86,11 @@ export function capitalizeFirstChar(string: string) {
 export function getPageIcon(icon: string, size = 18): string | ReactNode {
   return (
     icon || (
-      <ActionIcon variant="transparent" color="gray" size={size}>
-        <IconFileDescription size={size} />
-      </ActionIcon>
+      <IconFileDescription
+        size={size}
+        color="var(--mantine-color-gray-6)"
+        aria-hidden="true"
+      />
     )
   );
 }