added diagnostic_interval int for nonlinear solver diagnostic. #22994

Job	Run time
GCC 1D & 2D w/ MPI, QED tools	18m 47s
GCC Minimal w/o MPI	22m 20s
GCC 3D & RZ w/ MPI, single precision	23m 12s
GCC ABLASTR w/o MPI	1m 9s
Clang pywarpx	14m 36s
	1h 20m 4s

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