denoise

## issue-196-repro.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>pagedjs #196 regression reproducer — hang on many small tables</title>
<style>
  @page { size: A5; margin: 15mm; }
  body { font-family: sans-serif; font-size: 9pt; line-height: 1.4; }
  h2 { break-after: avoid; }
  h3 { break-after: avoid; break-inside: avoid; }
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>pagedjs #196 regression reproducer — hang on many small tables</title>
	<style>
	@page { size: A5; margin: 15mm; }
	body { font-family: sans-serif; font-size: 9pt; line-height: 1.4; }
	h2 { break-after: avoid; }
	h3 { break-after: avoid; break-inside: avoid; }