Fix repeatedly initialize shared memory data and protect the memory's fields (#2673)

Avoid repeatedly initializing the shared memory data when creating the child
thread in lib-pthread or lib-wasi-threads.

Add shared memory lock when accessing some fields of the memory instance
if the memory instance is shared.

Init shared memory's memory_data_size/memory_data_end fields according to
the current page count but not max page count.

Add wasm_runtime_set_mem_bound_check_bytes, and refine the error message
when shared memory flag is found but the feature isn't enabled.

core/iwasm/common/wasm_runtime_common.c

@@ -3038,7 +3038,8 @@ wasm_runtime_init_wasi(WASMModuleInstanceCommon *module_inst,
             }
         }
 
-        strncpy(mapping_copy, map_dir_list[i], strlen(map_dir_list[i]) + 1);
+        bh_memcpy_s(mapping_copy, max_len, map_dir_list[i],
+                    (uint32)(strlen(map_dir_list[i]) + 1));
         map_mapped = strtok(mapping_copy, "::");
         map_host = strtok(NULL, "::");