fix(i18n): 补充求解失败弹窗中文翻译

- 将求解失败弹窗标题翻译为“求解器错误”
- 将失败提示翻译为“求解失败！”
- 更新中文 qm 翻译文件

Bin/Config/Lang/cn/nmNum_cn.ts

@@ -2840,7 +2840,7 @@ Reason: %1</source>
     </message>
     <message>
         <source>solver error</source>
-        <translation type="unfinished"></translation>
+        <translation>求解器错误</translation>
     </message>
     <message>
         <source>The solver currently supports oil, gas, and water single-phase models and the oil-water two-phase model only.</source>
@@ -2848,7 +2848,7 @@ Reason: %1</source>
     </message>
     <message>
         <source>solver failed!</source>
-        <translation type="unfinished"></translation>
+        <translation>求解失败！</translation>
     </message>
     <message>
         <source>Progress:</source>