fix: handle case in SCCNonlinearProblem when no guesses are provided

[AayushSabharwal]

Checklist

• Appropriate tests were added
• Any code changes were done in a way that does not break public API
• All documentation related to code changes were updated
• The new code follows the
  contributor guidelines, in particular the SciML Style Guide and
  COLPRAC.
• Any new documentation only uses public API

Additional context

Add any other context about the problem here.

[github-actions]

Benchmark Results (Julia vlts)

Time benchmarks

	master	fd3d89f...	master / fd3d89f...
ODEProblem	5.86 ± 0.64 ms	6.67 ± 1.6 ms	0.879 ± 0.23
init	0.0905 ± 0.029 ms	0.0979 ± 0.026 ms	0.925 ± 0.39
large_parameter_init/ODEProblem	28.2 ± 5.1 ms	30 ± 6.5 ms	0.94 ± 0.27
large_parameter_init/init	0.121 ± 0.045 ms	0.127 ± 0.043 ms	0.952 ± 0.48
mtkcompile	9.6 ± 0.98 ms	11.7 ± 3.4 ms	0.818 ± 0.25
sparse_analytical_jacobian/ODEProblem	29 ± 3.8 ms	0.0327 ± 0.0063 s	0.886 ± 0.21
sparse_analytical_jacobian/f_iip	0.07 ± 0.01 μs	0.07 ± 0.01 μs	1 ± 0.2
sparse_analytical_jacobian/f_oop	0.383 ± 0.022 ms	0.377 ± 0.024 ms	1.02 ± 0.086
time_to_load	7.32 ± 0.41 s	9.3 ± 0.6 s	0.787 ± 0.067

Memory benchmarks

	master	fd3d89f...	master / fd3d89f...
ODEProblem	0.0395 M allocs: 1.99 MB	0.0395 M allocs: 1.99 MB	1
init	0.417 k allocs: 0.0698 MB	0.417 k allocs: 0.0698 MB	1
large_parameter_init/ODEProblem	0.323 M allocs: 11.3 MB	0.323 M allocs: 11.3 MB	1
large_parameter_init/init	0.605 k allocs: 0.172 MB	0.605 k allocs: 0.172 MB	1
mtkcompile	0.061 M allocs: 3.3 MB	0.061 M allocs: 3.32 MB	0.995
sparse_analytical_jacobian/ODEProblem	0.19 M allocs: 7.81 MB	0.191 M allocs: 7.84 MB	0.996
sparse_analytical_jacobian/f_iip	0 allocs: 0 B	0 allocs: 0 B
sparse_analytical_jacobian/f_oop	0.634 k allocs: 19.6 kB	0.634 k allocs: 19.6 kB	1
time_to_load	0.153 k allocs: 14.6 kB	0.153 k allocs: 14.6 kB	1

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	master	fd3d89f...	master / fd3d89f...
ODEProblem	12.4 ± 2.9 ms	7.75 ± 0.93 ms	1.6 ± 0.42
init	0.0846 ± 0.012 ms	0.087 ± 0.011 ms	0.973 ± 0.19
large_parameter_init/ODEProblem	0.0481 ± 0.016 s	0.0364 ± 0.0054 s	1.32 ± 0.48
large_parameter_init/init	0.0937 ± 0.045 ms	0.0974 ± 0.041 ms	0.961 ± 0.62
mtkcompile	16.3 ± 4.1 ms	12.4 ± 1.2 ms	1.32 ± 0.35
sparse_analytical_jacobian/ODEProblem	0.0399 ± 0.0054 s	0.0343 ± 0.0034 s	1.16 ± 0.2
sparse_analytical_jacobian/f_iip	1.89 ± 0.84 μs	1.89 ± 0.56 μs	1 ± 0.53
sparse_analytical_jacobian/f_oop	0.123 ± 0.013 ms	0.123 ± 0.014 ms	1 ± 0.16
time_to_load	6.81 ± 0.27 s	6.57 ± 0.3 s	1.04 ± 0.063

Memory benchmarks

	master	fd3d89f...	master / fd3d89f...
ODEProblem	0.0397 M allocs: 1.83 MB	0.0397 M allocs: 1.8 MB	1.02
init	0.416 k allocs: 0.0518 MB	0.416 k allocs: 0.0518 MB	1
large_parameter_init/ODEProblem	0.351 M allocs: 12.8 MB	0.351 M allocs: 12.8 MB	1
large_parameter_init/init	0.799 k allocs: 0.152 MB	0.799 k allocs: 0.152 MB	1
mtkcompile	0.0592 M allocs: 2.62 MB	0.0592 M allocs: 2.62 MB	1
sparse_analytical_jacobian/ODEProblem	0.185 M allocs: 6.88 MB	0.185 M allocs: 6.88 MB	1
sparse_analytical_jacobian/f_iip	0 allocs: 0 B	0 allocs: 0 B
sparse_analytical_jacobian/f_oop	0.848 k allocs: 27 kB	0.848 k allocs: 27 kB	1
time_to_load	0.146 k allocs: 11.4 kB	0.146 k allocs: 11.4 kB	1