Update documentation of `as_ptr` function of Atomic$Int to clarify circumstances of usage#139637

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madhav-madhusoodanan:Atomic_as_ptr_doc_update

Commits on Apr 17, 2025

Update documentation of `as_ptr` to reflect that its usage must not lead to data races.
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Update documentation of AtomicPtr and AtomicBool to clarify the circumstances of usage
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Commits on Apr 23, 2025

Adding intradoc links for better clarity on memory model
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