fix: distinguish missing backtrace unwind rows#221
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Add a backtrace status for PCs that are not covered by any prepared unwind row, so runtime table misses no longer look like unsupported CFI. Keep the existing UnsupportedCfi value for rows whose CFI rules cannot be lowered to the compact eBPF unwinder.
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Add a backtrace status for PCs that are not covered by any prepared unwind row, so runtime table misses no longer look like unsupported CFI.
Keep the existing UnsupportedCfi value for rows whose CFI rules cannot be lowered to the compact eBPF unwinder.