The PR to unify resource isolation config creation has exposed that the current logic to resolve the default object_store_memory contains many old artifacts that needs to be cleaned up.

This issue will track the following laundry list of items that needs to be improved:

• memory resolution logic is currently fragmented across many different function calls (e.g. resource_and_label_spec for memory resolution, determine_plasma_store_config for object store resolution). For clarity and consistency, memory resolution should be organized into a single location. (Refactoring the monolithic resolution function into multiple parts will also improve readability: [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment)).
• There was an issue with specific macbook many years ago, that we've created an adhoc solution for. We should create a more general fix for this: [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment).
• A large amount of memory was reserved to resolve a rounding error. This is a waste of memory on large machines: [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment).
• Code specific to platform repeated uses if statements to check what OS they are running on. We could create a single utility that runs code based on OS for cleanliness.
• [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment)
  We will need to do a pass over these logic to unify and update the object_store resolution process.
• We only cap the default object store memory with the object store memory cap when the user did not specify a custom value. This eliminates the point of having a cap, and we should also cap user specified object store size as well. [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment)
• After the PR to unify resource isolation config creation, self.available_memory and self.object_store_memory should only be None on connect only case. It will be more safe to make this point explicit: [Core] (Resource Isolation 1/n) Unify resource isolation config construction into a single step #59372 (comment)