flaky test: TestAllChangesFlushed (invalid connection)

[morgo]

2026-05-01T17:14:01.7840794Z test-1           | --- FAIL: TestAllChangesFlushed (10.36s)
2026-05-01T17:14:01.7840903Z test-1           |     subscription_test.go:19: 
2026-05-01T17:14:01.7841121Z test-1           |         	Error Trace:	/app/pkg/testutils/testing.go:121
2026-05-01T17:14:01.7841262Z test-1           |         	            				/app/pkg/repl/subscription_test.go:19
2026-05-01T17:14:01.7841391Z test-1           |         	            				/app/pkg/repl/client_test.go:661
2026-05-01T17:14:01.7841524Z test-1           |         	Error:      	Received unexpected error:
2026-05-01T17:14:01.7841634Z test-1           |         	            	invalid connection
2026-05-01T17:14:01.7841804Z test-1           |         	Test:       	TestAllChangesFlushed

[morgo]

Also getting:

2026-05-01T20:43:39.6857251Z test-1   |     e2e_test.go:328: 
2026-05-01T20:43:39.6857400Z test-1   |         	Error Trace:	/app/pkg/migration/e2e_test.go:328
2026-05-01T20:43:39.6857522Z test-1   |         	Error:      	Received unexpected error:
2026-05-01T20:43:39.6857625Z test-1   |         	            	invalid connection
2026-05-01T20:43:39.6857808Z test-1   |         	Test:       	TestPartitionedTable

[morgo]

 --- FAIL: TestMoveFailsGracefullyWithMinimalRBR (11.84s)
test-1           |     runner_test.go:327: 
test-1           |         	Error Trace:	/app/pkg/testutils/testing.go:121
test-1           |         	            				/app/pkg/move/runner_test.go:327
test-1           |         	Error:      	Received unexpected error:
test-1           |         	            	invalid connection
test-1           |         	Test:       	TestMoveFailsGracefullyWithMinimalRBR
test-1          

[morgo]

2026-05-03T14:17:10.6249065Z test-1   |     resume_test.go:621: 
2026-05-03T14:17:10.6249370Z test-1   |         	Error Trace:	/app/pkg/migration/resume_test.go:621
2026-05-03T14:17:10.6249726Z test-1   |         	Error:      	Received unexpected error:
2026-05-03T14:17:10.6250089Z test-1   |         	            	invalid connection
2026-05-03T14:17:10.6250512Z test-1   |         	Test:       	TestResumeFromCheckpointE2ECompositeVarcharPK
2026-05-03T14:17:10.6250854Z test-1   |