JSX outside every function now renders from what a plain call there is
attributed to: a top-level value, or the file. Ownership is by line,
so no tag counts twice. Merged with main's destructuring rules (PRs
2676 and 2677): an owning parent takes a name as its local by its own
lines or by the file's top-level destructuring, and function parents
keep main's scope rules. The viewer's shared-chrome count no longer
counts a file as a render parent.
A/B: excalidraw +132 and bulletproof-react +38 render sites (tests to
the components they render, entries to their root apps, stories to
their components), none removed.
Fixes issue 2587.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
