Fixes: Added session variable types and modified configuration (#11269)

### What problem does this PR solve?

Fixes: Added session variable types and modified configuration

- Added more types of session variables
- Modified the embedding model switching logic in the knowledge base
configuration

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/locales/en.ts

@@ -1009,6 +1009,7 @@ Example: general/v2/`,
       pleaseUploadAtLeastOneFile: 'Please upload at least one file',
     },
     flow: {
+      formatTypeError: 'Format or type error',
       variableNameMessage:
         'Variable name can only contain letters and underscores',
       variableDescription: 'Variable Description',

web/src/locales/zh.ts

@@ -956,6 +956,7 @@ General：实体和关系提取提示来自 GitHub - microsoft/graphrag：基于
       pleaseUploadAtLeastOneFile: '请上传至少一个文件',
     },
     flow: {
+      formatTypeError: '格式或类型错误',
       variableNameMessage: '名称只能包含字母和下划线',
       variableDescription: '变量的描述',
       defaultValue: '默认值',