IMPORT: failure due to gc threshold subsequently fails to rollback

Observed on drt-ua2, running `A0AF5664`: the initial import failed after several days, and now appears stuck and unable to revert:

> addsstable [/Tenant/3/Table/114/1/127876/7/-3001/1/0,/Tenant/3/Table/114/1/127877/5/-2150/11/0/NULL): batch timestamp 1713131887.795927192,0 must be after replica GC threshold 1713138461.824411737,0 | 7 | 591956281271723629 | {"reverting execution from '2024-04-15 04:31:34.478337' to '2024-04-15 04:31:38.13894' on 7 failed: rolling back IMPORT INTO in empty table via DeleteRange: delete range /Tenant/3/Table/114/1/190836/1/-2999/1 - /Tenant/3/Table/114/1/216277/8/-2823/6: replica unavailable: (n2,s2):5 unable to serve request to r76626:/Tenant/3/Table/114/1/{190836/1/-2999/1-214285/8/-3001/1} [(n2,s2):5, (n1,s1):2, (n3,s3):3VOTER_DEMOTING_LEARNER, (n5,s5):6VOTER_INCOMING, next=7, gen=17148, sticky=1713076548.036832953,0]: closed timestamp: 1713076086.298572324,0 (2024-04-14 06:28:06); raft status: {\"id\":\"5\",\"term\":7,\"vote\":\"5\",\"commit\":39,\"lead\":\"5\",\"raftState\":\"StateLeader\",\"applied\":39,\"progress\":{\"3\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"},\"5\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"},\"6\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"},\"2\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"}},\"leadtransferee\":\"0\"}: encountered poisoned latch /M{in-ax}@0,0","reverting execution from '2024-04-15 05:03:15.042559' to '2024-04-15 05:03:18.809365' on 2 failed: rolling back IMPORT INTO in empty table via DeleteRange: delete range /Tenant/3/Table/114/1/190836/1/-2999/1 - /Tenant/3/Table/114/1/216277/8/-2823/6: replica unavailable: (n2,s2):5 unable to serve request to r76626:/Tenant/3/Table/114/1/{190836/1/-2999/1-214285/8/-3001/1} [(n2,s2):5, (n1,s1):2, (n3,s3):3VOTER_DEMOTING_LEARNER, (n5,s5):6VOTER_INCOMING, next=7, gen=17148, sticky=1713076548.036832953,0]: closed timestamp: 1713076086.298572324,0 (2024-04-14 06:28:06); raft status: {\"id\":\"5\",\"term\":7,\"vote\":\"5\",\"commit\":39,\"lead\":\"5\",\"raftState\":\"StateLeader\",\"applied\":39,\"progress\":{\"2\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"},\"3\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"},\"5\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"},\"6\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"}},\"leadtransferee\":\"0\"}: encountered poisoned latch /M{in-ax}@0,0","reverting execution from '2024-04-15 06:07:14.455743' to '2024-04-15 06:07:20.81839' on 3 failed: rolling back IMPORT INTO in empty table via DeleteRange: delete range /Tenant/3/Table/114/1/189154/4/-3000/1 - /Tenant/3/Table/114/1/214594/5/-1359/5: replica unavailable: (n2,s2):5 unable to serve request to r76626:/Tenant/3/Table/114/1/{190836/1/-2999/1-214285/8/-3001/1} [(n2,s2):5, (n1,s1):2, (n3,s3):3VOTER_DEMOTING_LEARNER, (n5,s5):6VOTER_INCOMING, next=7, gen=17148, sticky=1713076548.036832953,0]: closed timestamp: 1713076086.298572324,0 (2024-04-14 06:28:06); raft status: {\"id\":\"5\",\"term\":7,\"vote\":\"5\",\"commit\":39,\"lead\":\"5\",\"raftState\":\"StateLeader\",\"applied\":39,\"progress\":{\"5\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"},\"6\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"},\"2\":{\"match\":0,\"next\":37,\"state\":\"StateSnapshot\"},\"3\":{\"match\":66425,\"next\":66426,\"state\":\"StateReplicate\"}},\"leadtransferee\":\"0\"}: encountered poisoned latch `/M{in-ax}@0,0`"}

The DB console reports no unavailable ranges.

Jira issue: CRDB-37824