Wrong-dimension Add leaves a visible HNSW ghost node

#!/usr/bin/env python3
import os
import subprocess
import sys
from pathlib import Path

src = Path(os.environ.get("WEAVIATE_SRC", ".")).resolve()
pkg = src / "adapters/repos/db/vector/hnsw"
test = pkg / "zz_wrong_dimension_ghost_repro_test.go"

test.write_text(r'''
package hnsw

import (
	"context"
	"testing"

	"github.com/stretchr/testify/require"
)

func TestWrongDimensionGhostNode(t *testing.T) {
	index := testHNSW(t)
	defer index.Shutdown(context.Background())

	require.NoError(t, index.AddBatch(context.Background(),
		[]uint64{1, 2},
		[][]float32{{1, 0, 0, 0}, {0, 1, 0, 0}},
	))

	require.Error(t, index.Add(context.Background(), 3,
		[]float32{0, 0, 1}))

	if index.ContainsDoc(3) {
		t.Fatalf("ghost node detected: ContainsDoc(3) == true")
	}
}
''')

try:
    p = subprocess.run(
        [
            "go", "test",
            "./adapters/repos/db/vector/hnsw",
            "-run", "^TestWrongDimensionGhostNode$",
            "-count=1",
            "-v",
        ],
        cwd=src,
        text=True,
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT,
    )
    print(p.stdout)
    if "ghost node detected" in p.stdout:
        print("REPRODUCED: failed Add left document 3 visible")
        sys.exit(0)
    sys.exit(p.returncode or 1)
finally:
    test.unlink(missing_ok=True)