Update accesskit to 0.17

[lucasmerlin]

Updates accesskit and kittest.

• I have followed the instructions in the PR template

[github-actions]

Preview available at https://egui-pr-preview.github.io/pr/5372-lucas/update-accesskit
Note that it might take a couple seconds for the update to show up after the preview_build workflow has completed.

[lucasmerlin]

@mwcampbell the update was straightforward, but maybe you can review this in case I missed anything?

Especially around the set_default_action_verb, I just removed those calls but am not 100% sure if I need to do anything else there.

[mwcampbell]

I see you dropped two calls to set_default_action_verb:

• builder.set_default_action_verb(accesskit::DefaultActionVerb::Focus);: This one is no longer necessary.
• builder.set_default_action_verb(accesskit::DefaultActionVerb::Click);: The if statement surrounding this needs to be re-added, but replace this statement with: builder.add_action(accesskit::Action::Click);.

The other problem is with the part where you use builder.set_label. If the role of the new node is Role::Label, you need to use builder.set_value instead.

[lucasmerlin]

@mwcampbell thank you for the review, I've updated the PR accordingly!

[mwcampbell]

LGTM now. I also did a quick test with a screen reader, and all looks right.

[mwcampbell]

Just checking: are you waiting on something else from me before merging? Thanks.

[lucasmerlin]

No, just waiting for @emilk to merge this

[bircni]

lgtm 👍