Make the umbrella context nest - #58261
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Summary: Umbrellas bracketed their includes with a bare `#define`/`#undef` of `RN_UMBRELLA_CONTEXT`. That does not nest: an umbrella reached from inside another umbrella's context cleared it on the way out, so every public header the outer umbrella included afterwards hit `UmbrellaGuard.h`. Switch the bracket to `#pragma push_macro`/`pop_macro` so the inner umbrella restores the outer context instead of clearing it. Nothing nests today, it starts once a for-frameworks header reaches a public module through its umbrella. Changelog: [Internal] Differential Revision: D118114589
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Summary:
Umbrellas bracketed their includes with a bare
#define/#undefofRN_UMBRELLA_CONTEXT. That does not nest: an umbrella reached from insideanother umbrella's context cleared it on the way out, so every public header
the outer umbrella included afterwards hit
UmbrellaGuard.h. Switch thebracket to
#pragma push_macro/pop_macroso the inner umbrella restores theouter context instead of clearing it.
Nothing nests today, it starts once a
for-frameworks header reaches a public module through its umbrella.
Changelog: [Internal]
Differential Revision: D118114589