change(mes/materialBom): 修改结构 BOM 树表格列标题

- 将"物料类型"列的标题修改为"结构BOM名称"

src/views/mes/materialBom/index.vue

@@ -229,7 +229,7 @@
         :default-expand-all="true"
       >
         <el-table-column label="序号" type="index" width="50" align="center" />
-        <el-table-column label="物料类型" prop="materialTypeName" min-width="120" />
+        <el-table-column label="结构BOM名称" prop="materialTypeName" min-width="120" />
         <el-table-column label="物料" prop="materialName" min-width="180">
           <template #default="scope">
             <el-input