fix(loki): prevent blocked fanout destination from blocking others issue 2194#4989

cnygaard wants to merge 2 commits intografana:maingrafana/alloy:mainfrom

cnygaard:fix/issue-2194-forwarding-to-multiple-components-blocks-all-if-one-is-blockedcnygaard/alloy:fix/issue-2194-forwarding-to-multiple-components-blocks-all-if-one-is-blockedCopy head branch name to clipboard