Fix interpreting baud rate bitmask as decimal value#123348

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mrek-msft wants to merge 10 commits intodotnet:mainfrom

mrek-msft:dev/mrek/serial_baud_bitmask_bitrate_missmatch

Commits on Jan 5, 2026

Fix confusing baud bitmask (obtained from Win32) and actuall bitrate (obtained from user).
mrek-msft
committed

Commits on Jan 12, 2026

Commits on Jan 19, 2026