Minor bug fixes (#2128)

- make sure bsp is processed on `l` levels in extraction (caused missing
remaps)
- clean up a few prints in extraction
- handle the <15 byte differences in art group files automatically (no
more errors about file naming)
- fix potential exception thrown by merc2 in a few ways: fixed bad data
in FR3's, check texture index just in case, and handle exceptions a
little bit better (still a crash, but at least you get a print)
- fix mips2 ocean stuff causing ocean far crashes

decompiler/level_extractor/BspHeader.cpp

@@ -933,7 +933,6 @@ void PrototypeBucketTie::read_from_file(TypedRef ref,
       break;
     case GameVersion::Jak2:
       flags = read_plain_data_field<u16>(ref, "flags", dts);
-      lg::print("flag: {}\n", flags);
       break;
     default:
       ASSERT(false);
@@ -954,8 +953,6 @@ void PrototypeBucketTie::read_from_file(TypedRef ref,
         collide_frag.read_from_file(typed_ref_from_basic(p, dts), dts, stats, version);
       }
     }
-  } else {
-    lg::warn("Skipping prototype-bucket-tie collision");
   }
 
   auto next_slot = get_field_ref(ref, "next", dts);