CHANGE handling of extended profile data (bio and pronouns)

[dozro]

Description

also setting and reading the pronouns set under the key definied in matrix-org/matrix-spec-proposals#4247 (even if not finalized yet, for the eventual adoption of it) and for broader compaitibility also setting the bio in the about field extera uses

show that it works

before the change

note that the data in the profile is inconsistent in the profile json shown, which I wanted to prevent with this pr

after the change

the pronoun sets are now consistent with each other

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[dozro]

maybe the pronouns part should be left out 🤷‍♀️

[Rosy-iso]

doesn't this just..remove stuff
what does this accomplish

[7w1]

Uh, I'm not sure what this is for exactly? Right now we use the unstable prefix, as we're supposed to since its... unstable. Once it's merged we swap the implementation to support the new field but to my understanding we're not supposed to do that until its finalized? I could be wrong though.

[dozro]

@Rosy-iso @7w1 you're right!
the idea was especially in relation to the bio tho broaden compatibility