kv/kvclient/rangefeed: TestRangeFeedMetadataManualSplit failed

kv/kvclient/rangefeed.TestRangeFeedMetadataManualSplit [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/21384017?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/21384017?buildTab=artifacts#/) on master @ [470d62e2f69473a6c8562f17915617a4406f5bfa](https://github.com/cockroachdb/cockroach/commits/470d62e2f69473a6c8562f17915617a4406f5bfa):

```
sync.runtime_notifyListWait(0x7472f051ec10, 0x12a)
GOROOT/src/runtime/sema.go:617 +0x194
sync.(*Cond).Wait(0x7472f051ec00)
GOROOT/src/sync/cond.go:71 +0xa4
github.com/cockroachdb/cockroach/pkg/kv/kvserver/rangefeed.(*schedulerShard).processEvents(0x7472eeab3e00, {0x5b94be0, 0x7472ec5f8820})
pkg/kv/kvserver/rangefeed/scheduler.go:476 +0xa0
github.com/cockroachdb/cockroach/pkg/kv/kvserver/rangefeed.(*Scheduler).Start.func1({0x5b94be0, 0x7472ec5f8820})
pkg/kv/kvserver/rangefeed/scheduler.go:249 +0xe0
github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx.func1({0x5b94be0, 0x7472ec5f8820})
pkg/util/stop/stopper.go:447 +0x7c
created by github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx in goroutine 98360
pkg/util/stop/stopper.go:445 +0xe0

goroutine 97649 [chan receive, 3 minutes]:
github.com/cockroachdb/cmux.muxListener.Accept(...)
external/com_github_cockroachdb_cmux/cmux.go:207
crypto/tls.(*listener).Accept(0x7472f0fc6480)
GOROOT/src/crypto/tls/tls.go:78 +0x28
github.com/cockroachdb/cockroach/pkg/server.tlsRestrictLn.Accept({{0x5b718a0?, 0x7472f0fc6480?}})
pkg/server/server_http.go:393 +0x2c
net/http.(*Server).Serve(0x7472f8d0d000, {0x5b71330, 0x7472f115ce60})
GOROOT/src/net/http/server.go:3434 +0x244
github.com/cockroachdb/cockroach/pkg/server.startHTTPService.func4({0x7472e05c0780?, 0x5b94be0?})
pkg/server/server_http.go:382 +0x24
github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx.func1({0x5b94be0, 0x7472ec5bd220})
pkg/util/stop/stopper.go:447 +0x7c
created by github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx in goroutine 97706
pkg/util/stop/stopper.go:445 +0xe0

goroutine 98495 [sync.Cond.Wait]:
sync.runtime_notifyListWait(0x7472f051e5d0, 0x1749)
GOROOT/src/runtime/sema.go:617 +0x194
sync.(*Cond).Wait(0x7472f051e5c0)
GOROOT/src/sync/cond.go:71 +0xa4
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*raftSchedulerShard).worker(0x7472ee57f8f0, {0x5b94be0, 0x7472ec5bd220}, {0x5bbdb00, 0x7472ed952c88}, 0x7472ec58c008)
pkg/kv/kvserver/scheduler.go:379 +0xd4
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*raftScheduler).Start.func2({0x5b94be0, 0x7472ec5bd220}, 0x5b94be0?)
pkg/kv/kvserver/scheduler.go:314 +0xc8
created by github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*raftScheduler).Start in goroutine 98360
pkg/kv/kvserver/scheduler.go:329 +0x210

goroutine 99106 [select]:
github.com/cockroachdb/cockroach/pkg/kv/kvclient/rangefeed/rangefeedcache.(*Watcher[...]).Run(0x5bd5800, {0x5b945f8, 0x7472f6bd79a0})
pkg/kv/kvclient/rangefeed/rangefeedcache/watcher.go:344 +0x6d8
github.com/cockroachdb/cockroach/pkg/kv/kvclient/rangefeed/rangefeedcache.Start[...].func1()
pkg/kv/kvclient/rangefeed/rangefeedcache/watcher.go:202 +0x20c
github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx.func1({0x5b94be0, 0x7472ec5bd220})
pkg/util/stop/stopper.go:447 +0x7c
created by github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx in goroutine 97706
pkg/util/stop/stopper.go:445 +0xe0
```
Help

See also: [How To Investigate a Go Test Failure \(internal\)](https://cockroachlabs.atlassian.net/l/c/HgfXfJgM)

/cc @cockroachdb/kv-triage

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Jira issue: CRDB-64726