lib/build: update the build commands.

if the edc file path is changed, the build command should be updated.
Before this fix, it missed updation so the live view wasn't updated even if new template is selected.

src/lib/build.c

@@ -247,4 +247,5 @@ build_edc_path_set(const char *edc_path)
    if (bd->edc_path == edc_path) return;
    eina_stringshare_del(bd->edc_path);
    bd->edc_path = eina_stringshare_add(edc_path);
+   bd->build_cmd_changed = EINA_TRUE;
 }