Most recent Safari version doesn't process shared Kibana dashboards in iframe due to CSP violation

[mpbraendle]

**Kibana version: 8.5.2

**Elasticsearch version: 8.5.2

**Browser version: Safari 16.3

**Browser OS version: Mac OS 12.6.3, iOS 16.3

**Describe the bug:
The most recent Safari version doesn't process a shared Kibana dashboard in an iframe

Steps to reproduce:
Go to https://www.zora.uzh.ch using Safari 16.3

Dashboard under "Open Access Distribution" isn't displayed. See errors in browser console below.

This dashboard is embedded as an iframe from https://www.kibanapublic.uzh.ch/s/oam/app/dashboards?auth_provider_hint=anonymous1#/view/8f7c8fce-4bb3-574f-84c7-6ae2c7467901?embed=true&_g=(filters:!(),refreshInterval:(pause:!t,value:0),time:(from:now-100y,to:now))&hide-filter-bar=true into www.zora.uzh.ch . The former URL (open iframe in new tab) works.

Expected behavior:
Older Safari browsers, Firefox, Google Chrome do work.

Errors in browser console (if relevant):

Many errors are displayed, but the most relevant is:
"Refused to execute a script because its hash, its nonce, or 'unsafe-inline' does not appear in the script-src directive of the Content Security Policy (dashboard.js, line 286)"

[elasticmachine]

Pinging @elastic/kibana-presentation (Team:Presentation)

[elasticmachine]

Pinging @elastic/appex-sharedux (Team:SharedUX)

[ThomThomson]

Closing this for the time being. It will be tracked in our Icebox for Iframe / Embedding issues and will be re-opened if our priorities change.