Exclude closing script tags in HAR files (#4500)

Author: soulgalore

lib/plugins/html/templates/url/waterfall/includeHARinHTML.pug

@@ -3,7 +3,7 @@
 //- specific run (the median run) in summaryPageHAR.
 //- Inline script tags breaks the output
 - dahar = h.get(pageInfo.data, 'browsertime.run.har', summaryPageHAR)
-- dahar = JSON.stringify(dahar.log).split('</script>').join('&lt;/script&gt;')
+- dahar = JSON.stringify(dahar.log).split('</script>').join('&lt;/script&gt;').split('<script>').join('&lt;script&gt;')
 
 script(src= assetsPath + 'js/perf-cascade.min.js')
 script(type='text/javascript').