fix(logs): respect printf length modifiers in params

[jpnurmi]

Fix structured log parameter extraction to respect printf argument widths.

The previous parser always consumed integer variadic arguments as 64-bit values, even for default-width specifiers like %d and %u. On 32-bit platforms this can read adjacent stack data, desynchronize later arguments, and serialize leaked or corrupted values into log attributes.

This also consumes dynamic width and precision arguments so formats like %*d stay aligned with the underlying va_list.

[cursor]

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