Put general comments on top of empty msgid

These should not be comments on an actual message, since they apply
throughout the entire file, so the sensible location is as comments on
the empty msgid.

Closes fish-shell#11843

Author: Daniel Rainer

po/zh_CN.po

@@ -1,20 +1,7 @@
 # fish-note-sections: Translations are divided into sections, each starting with a fish-section-* comment.
 # fish-note-sections: The first few sections are more important.
 # fish-note-sections: Ignore the tier3 sections unless you have a lot of time.
-msgid ""
-msgstr ""
-"Project-Id-Version: fish 1.21.8\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-03-10 16:38+0100\n"
-"PO-Revision-Date: 2025-09-30 19:14+0800\n"
-"Last-Translator: Yuyi Wang <Strawberry_Str@hotmail.com>\n"
-"Language-Team: \n"
-"Language: zh_CN\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 3.7\n"
-
+#
 # General Notices 凡例
 # abort: 中止
 # argument: 参数
@@ -41,6 +28,20 @@ msgstr ""
 # token: 记号
 # universal (variable): 通用
 # valid & invalid: 有效 & 无效
+msgid ""
+msgstr ""
+"Project-Id-Version: fish 1.21.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2024-03-10 16:38+0100\n"
+"PO-Revision-Date: 2025-09-30 19:14+0800\n"
+"Last-Translator: Yuyi Wang <Strawberry_Str@hotmail.com>\n"
+"Language-Team: \n"
+"Language: zh_CN\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.7\n"
+
 msgid ""
 "\n"
 "   PID  Command\n"