Merge pull request #70157 from MattyWilliams22/wip-skip-error-inject-tests

qa: Skip error inject tests when external error inject is happening

Reviewed-by: Alex Ainscow <aainscow@uk.ibm.com>
Reviewed-by: Bill Scales <bill_scales@uk.ibm.com>
Reviewed-by: Callum James <callum.james@ibm.com>