nrf: Fix a few issues with UART REPL#17212

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dpgeorge wants to merge 3 commits intomicropython:masterfrom

dpgeorge:nrf-fix-uart-repl

Commits on Apr 30, 2025

nrf: Only process interrupt chars on UARTs used for REPL.
dpgeorge
committed
nrf: Fix UART write on parts that can't write more than 255 bytes.
dpgeorge
committed
nrf/boards: Use 64 byte raw-paste buffer on PCA10028 and PCA10040.
dpgeorge
committed