Wrong groupping of javascript incidents

[nijel]

Groupping of javascript incidents does group too many not matching incidents.

For example https://reports.phpmyadmin.net/reports/view/19421 "Syntax error, unrecognized expression: #Warnings&phpMyAdmin=toh1r7h6gn19tpqg7qn2hv3vfm6pg0ql" lists following incidents:

• Cannot read property 'resize_handler' of null - https://reports.phpmyadmin.net/incidents/view/678550
• null is not an object (evaluating 'event.data.resize_handler') - https://reports.phpmyadmin.net/incidents/view/675909
• cannot call methods on slider prior to initialization; attempted to call method 'value' - https://reports.phpmyadmin.net/incidents/view/675536
• Syntax error, unrecognized expression: #Warnings&phpMyAdmin=nbh8n82hfk4n3cqebhnhfi3sulkogj5c - https://reports.phpmyadmin.net/incidents/view/674575