Properly account for anonymous access in Confluence

[hagen-danswer]

Description

• Anonymous access is now properly handled for confluence server
• permissions now properly inherit across ancestors

How Has This Been Tested?

• tested on confluence server by changing permissions of a child/parent page for a non admin user
• tested by removing all group access from a space and still ensuring access is given to those where the space has anonymous access is enabled

Backporting (check the box to trigger backport action)

Note: You have to check that the action passes, otherwise resolve the conflicts manually and tag the patches.

• This PR should be backported (make sure to check that the backport attempt succeeds)

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Name	Status	Preview	Comments	Updated (UTC)
internal-search	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 5, 2025 8:13pm

[Weves]

nit: these functions are confusingly named. It's not clear what the difference between _get_all_page_restrictions and _fetch_all_page_restrictions is.

One should probably named _get_restrictons_for_page_batch and the other _get_restrictions_for_page or something similar.

Let's address this in a follow up.