uniformFixedValue bc cannot be used in second order cases (restart)

@Development

uniformFixedValue bc

• never reads the 'value' field
• never maps the value and instead re-evaluates the Function1. This is wrong for old-time fields ('_0'). Try e.g. compressible/rhoPimpleFoam/laminar/sineWaveDamping with for 0/p

        type            uniformFixedValue; // oscillatingFixedValue;
        uniformValue table   ((0 100000)(1 200000));

run for a bit and then decompose a time with p_0.