[css-view-transitions-2] Meta: list of issues required for cross-document view-transitions

[noamr]

Blocking
#9867
#9822
#9888
#9886
#9891

Optional:

• [css-view-transitions-2] MPA: 'back' transitions #8685 Do we want to support back as a navigation type in the first version?
• [css-view-transitions-2] Should ViewTransitions be triggered for reloads? #8784 Reloads are disabled by default, should we enable them as an option in the first version?
• [css-view-transitions-2] Script event on old Document for cross-document ViewTransitions #8785
• [css-view-transitions-2] Behavior of mismatching types between old and new document #9526

Resolved, still not in the spec:

• [css-view-transitions-2] MPA and SPA API compatibility #8677 Add the design principle of SPA/MPA compatibility as a note
• [css-view-transitions-2] UAs should show loading indicators when waiting for response #9156