Hide error screen icon from accessibility technologies

It does not have any meaningful accessible label to contribute beyond what is already stated in the heading.

src/ErrorView.tsx

@@ -99,7 +99,7 @@ export const ErrorView: FC<Props> = ({
   return (
     <div className={styles.error}>
       <BigIcon className={styles.icon}>
-        <Icon />
+        <Icon aria-hidden />
       </BigIcon>
       <Heading as="h1" weight="semibold" size="md">
         {title}

src/room/__snapshots__/GroupCallErrorBoundary.test.tsx.snap

@@ -112,6 +112,7 @@ exports[`ConnectionLostError: Action handling should reset error state 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -262,6 +263,7 @@ exports[`should have a close button in widget mode 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -414,6 +416,7 @@ exports[`should render the error page with link back to home 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -566,6 +569,7 @@ exports[`should report correct error for 'Call is not supported' 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -718,6 +722,7 @@ exports[`should report correct error for 'Connection lost' 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -868,6 +873,7 @@ exports[`should report correct error for 'Incompatible browser' 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"
@@ -1015,6 +1021,7 @@ exports[`should report correct error for 'Insufficient capacity' 1`] = `
             data-size="large"
           >
             <svg
+              aria-hidden="true"
               fill="currentColor"
               height="1em"
               viewBox="0 0 24 24"