BUG: sample_from_island method in PromptDatabase

[0-1CxH]

current code:

if not island_programs:
...
    return self.sample(num_inspirations)

in self.sample, the complex _sample_inspirations method is used, but when the island is not empty, it simply uses random sampling:

        if len(other_programs) < num_inspirations:
            # Not enough programs in island, use what we have
            inspiration_ids = other_programs
        else:
            # Sample inspirations
            inspiration_ids = random.sample(other_programs, num_inspirations)

I think the _sample_inspirations meant to be used in all cases, not only the empty island case.

It is easy to fix tho, I just would like to point out this.