在对keyword类型字段应用排序时，它会按字典顺序排列并针对给定的数据：
AAAAAAAAAAA
AAAAaaaa
Aaaaaa
jjjjjaaa
jjjjjAAA
JJJJJJjjjj
aaaJJJJJjjjj
排序后变为：
AAAAAAAAAAA
AAAAaaaa
Aaaaaa
JJJJJJjjjj
aaaJJJJJjjjj
jjjjjAAA
jjjjjaaa
预期：是否可以根据字母顺序进行排序？
aaaJJJJJjjjj
Aaaaaa
AAAAaaaa
AAAAAAAAAAA
jjjjjaaa
jjjjjAAA
JJJJJJjjjj
请不要这样，我已经尝试了lowercase过滤选项并得到以下结果，这不是我的要求：
Aaaaaa
AAAAaaaa
AAAAAAAAAAA
aaaJJJJJjjjj
jjjjjaaa
jjjjjAAA
JJJJJJjjjj