fix: [Obs Applications > Service Error Detail][SCREEN READER]: Table …

…rows need TH[scope="row"] for SR usability: 0010 (#186973)

Closes: elastic/observability-dev#3547

## Summary

`rowHeader` attribute was added for the following table

<img width="1482" alt="image"
src="https://github.com/elastic/kibana/assets/20072247/e906e289-e576-499a-92ba-73cdf3c307ec">

x-pack/plugins/observability_solution/apm/public/components/app/error_group_details/top_erroneous_transactions/index.tsx

@@ -154,6 +154,7 @@ export function TopErroneousTransactions({ serviceName }: Props) {
       <EuiBasicTable
         items={data.topErroneousTransactions}
         columns={columns}
+        rowHeader="transactionName"
         loading={loading}
         data-test-subj="topErroneousTransactionsTable"
         error={