fix(sensor): swap Fast Cadence Period Divisor and Status Trigger Type

[stevebutler11]

Mesh Model v1.1 Section 4.1.3 packs the first byte of the Sensor Cadence state as the Fast Cadence Period Divisor in bits 0-6 and the Status Trigger Type in bit 7.

SensorCadence in SensorMessage.kt encodes & decodes them the other way round.

This fixes sensor cadence encoding/decoding in accordance with Mesh Model v1.1 by putting Status Trigger Type as the MSB and the Fast Cadence Period Divisor as the LSBs

NCS firmare (v3.1.1, subsys/bluetooth/mesh/sensor.c) confirms, as it encodes & decodes correctly:

// in sensor_cadence_encode function
net_buf_simple_add_u8(buf, (delta_type << 7) | (BIT_MASK(7) & fast_period_div));

// in sensor_cadence_decode function
div_and_type = net_buf_simple_pull_u8(buf);
delta_type = div_and_type >> 7;
// ...
*fast_period_div = div_and_type & BIT_MASK(7);

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