glomap_aerosol_kernel should use gh_scalar_array when available

### Are there any linked Issues or Pull Requests?

#193

### Brief description

Once a new PSyclone release is adopted, the arrays used in glomap_aerosol_kernel_mod.F90 from modules can be passed as arguments into the kernel, so better meeting style guidelines for writing kernels.

Note that #193 intends to introduce rhcrit as a further array to be passed into this kernel.

### Further details of the issue.

_No response_

Start by reading glomap_aerosol_kernel_mod.F90 and the linked issue #193, then check the relevant PSyclone release changes. Confirm which module arrays can be passed into the kernel and where gh_scalar_array is available. Done means the kernel follows the stated argument-passing style without overlooking rhcrit from #193.

Written by the indexing model from the issue text.