fix(shared-data): load pick up current properly #14350
Merged
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While we properly handled most kinds of pipette config, there's one we didn't: pick up current. It gets special treatment now because we can properly set different currents for different numbers of tips, rather than being a value. So, we need to mark it as a setting that needs to be iterated over a dictionary in its leaf value rather than directly set.
This also fixes an issue that caused the OT-2 to not boot when loading a pipette configuration that had a pick up current customization, since this code is called when loading a pipette.
It may be closing the barn after the horse escapes, but to prevent similar issues preventing boot, I also tossed in a catch all except that logs a loud message but won't prevent starting the server.
Testing
Closes RESC-187