[BUG] Fail to generate report for dashboards/visualizations with hashed url

[zhongnansu]

Describe the bug
Currently pdf/png report is based on url, but it failed to handle the hashed url case.

• example for regular url

https://demo.elastic.co/app/dashboards#/view/welcome_dashboard?_g=(filters:!(),refreshInterval:(pause:!t,value:0),time:(from:now-15m,to:now))&_a=(description:'Main%20landing%20page%20for%20Elastic%20Demo%20Gallery;%20a%20good%20reset%20point%20if%20you%20get%20lost.',filters:!(),fullScreenMode:!f,options:(darkTheme:!f,hidePanelTitles:!f,useMargins:!t),query:(language:kuery,query:''),timeRestore:!f,title:'Welcome%20Dashboard',viewMode:view)

• example for hashed url

https://www.xxx.com/app/discover#/view/05959b70-9621-11eb-bdf0-ef859c96e685?_g=h@c823129&_a=h@8896bf6

but Dashboards enababled url hashing when there's multiple state.
https://github.com/opensearch-project/OpenSearch-Dashboards/blob/main/src/plugins/opensearch_dashboards_utils/public/state_management/url/hash_unhash_url.test.ts#L109

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
able to create pdf/png

Plugins
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Screenshots
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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

Additional context
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[zhongnansu]

this is similar to #19