L2SS-369: Various OPC-UA point updates to mirror latest SDPTR

Jan David Molrequested to merge
L2SS-369-opcua-interface-updates into master

L2SS-369 L2SS-372: Renamed FPGA_sst_offload_selector to FPGA_sst_offload_weighted_subbands, and provided a default.

Closes L2SS-369

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