fix(sb10): remove highlight-init defer patch (no longer needed after externalize-runtime alignment)
Tasks 1.1-1.3 ported the upstream Storybook 10 externalize-the-runtime
pattern: storybook/preview-api and 9 sibling specifiers are now resolved
to synthetic cache files reading from globalThis.__STORYBOOK_MODULE_*,
populated by storybook/internal/preview/runtime's setup() side effect
which runs first in the preview entry. The Parcel CJS circular-dep
that motivated the patch (storybook/preview-api <-> chunk-SZQXB3JV.js
through dist/csf/index.js) no longer exists in our bundle graph because
storybook/preview-api is no longer bundled at all.
FEATURES.highlight is restored to its default true; addon-a11y's
violation visualization works again. Verified across all four config
dirs (.storybook, .storybook-s2, .chromatic, .chromatic-fc) for both
dev and build modes.