[investigate] Replace get_raw_prompt_from_config with `resolve_prompt()`

[rossdanlm]

I checked and the only place this is ever used is for figuring out the dependency graph in

aiconfig/python/src/aiconfig/util/params.py

Line 192 in ca1b731

].get_raw_prompt_from_config()

Since we don't today support running all dependencies through our editors today (and nobody has complained about it being a problem), I feel this can probably be low-pried

cc @rholinshead for originally pointing this out