panic: runtime error: index out of range in pyroscope/pkg/util/loser.(*Tree[...]).Winner(...)

#### Describe the bug
pyroscope_1 | panic: runtime error: index out of range [-1]
pyroscope_1 |
pyroscope_1 | goroutine 2007 [running]:
pyroscope_1 | github.com/grafana/pyroscope/pkg/util/loser.(*Tree[...]).Winner(...)
pyroscope_1 | github.com/grafana/pyroscope/pkg/util/loser/tree.go:99
pyroscope_1 | github.com/grafana/pyroscope/pkg/iter.(*TreeIterator[...]).Err(0x10?)
pyroscope_1 | github.com/grafana/pyroscope/pkg/iter/tree.go:25 +0x4d
pyroscope_1 | github.com/grafana/pyroscope/pkg/parquet.(*IteratorRowReader).ReadRows(0xc128eefbe0, {0xc024c19c08, 0x40, 0xc0029dd440?})
pyroscope_1 | github.com/grafana/pyroscope/pkg/parquet/row_reader.go:86 +0x172
pyroscope_1 | github.com/grafana/pyroscope/pkg/parquet.CopyAsRowGroups({0x3878b88, 0xc07db0bb60}, {0x386f920, 0xc128eefbe0}, 0x186a0)
pyroscope_1 | github.com/grafana/pyroscope/pkg/parquet/row_writer.go:32 +0xea
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*profileStore).writeRowGroups(0xc031236b40, {0xc10592edc0?, 0x4f31140?}, {0xc0029dd350, 0x3, 0x484302d8?})
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/profile_store.go:383 +0x21a
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*profileStore).Flush(0xc031236b40, {0x3888f10, 0x4f31140})
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/profile_store.go:186 +0x317
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*Head).flush(0xc084d24140, {0x3888f10, 0x4f31140})
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/head.go:563 +0x234
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*Head).Flush(0xc084d24140, {0x3888f10, 0x4f31140})
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/head.go:540 +0xd9
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*PhlareDB).Flush.func1(0xc084d24140, 0x7f8509a673c8?)
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/phlaredb.go:240 +0xb4
pyroscope_1 | github.com/samber/lo.Filter[...]({0xc10def6b00, 0x1, 0x7}, 0xc018bcbde0?)
pyroscope_1 | github.com/samber/lo@v1.38.1/slice.go:15 +0x9f
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*PhlareDB).Flush(0xc003ddeb40, {0x3888f10, 0x4f31140}, 0x0, {0x28a5490, 0xc})
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/phlaredb.go:238 +0x932
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb.(*PhlareDB).loop(0xc003ddeb40)
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/phlaredb.go:188 +0x28f
pyroscope_1 | created by github.com/grafana/pyroscope/pkg/phlaredb.New in goroutine 1883
pyroscope_1 | github.com/grafana/pyroscope/pkg/phlaredb/phlaredb.go:137 +0x476

#### To Reproduce
Steps to reproduce the behavior:

Don't know, didn't investigate that much.

#### Expected behavior

No panic.

#### Environment

- Infrastructure: bare-metal, docker on Linux 3.10.0-1062.9.1.el7.x86_64 CentOS Linux 7
- Deployment tool: docker-compose

#### Additional Context

Pyroscope verison is grafana/pyroscope:1.12.0 run with -target=all. Mostly standard configuration (beside limits), using s3 as data store.