modify hyper diffusion expressions to be more performant

[imreddyTeja]

Should follow #4728

hyperdiffusion_tendency! takes ~7% of a step with the config/common_configs/numerics_sphere_he16ze63.yml and config/longrun_configs/amip_target.ymlconfigs using ClimaCore 0.14.55

minimal reproducer

possible rewrites:

• Fuse sequential pointwise operations using foreach_point (requires a new CC release, or using main)
• store recomputed expressions in eagerly evaluated scratch fields
• Pre-project operators arguments when ClimaCore would insert implicit duplicated projections

TODO:

Add baseline benchmark results