ggml : reduce hash table reset cost (#8698)

* ggml : reduce hash table reset cost

* fix unreachable code warnings after GGML_ASSERT(false)

* GGML_ASSERT(false) -> GGML_ABORT("fatal error")

* GGML_ABORT use format string

examples/llava/clip.cpp

@@ -869,7 +869,7 @@ static ggml_cgraph * clip_image_build_graph(clip_ctx * ctx, const clip_image_f32
             embeddings = peg_0;
         }
         else {
-            GGML_ASSERT(false);
+            GGML_ABORT("fatal error");
         }
     }