RPC: Fix NRF Attributes service (#21682)
RPC: Fix NRF Attributes service (#21682)

Increase stack for RPC thread, was crashing during Attribute reads.
project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip