💄 style(ui): show "Force Format" toggle only for OpenAI channels

Previously, the "Force Format" switch was displayed for every channel type
although it only applies to OpenAI (type === 1).
This change wraps the switch in a conditional so it renders exclusively when
the selected channel type is OpenAI.

Why:
- Prevents user confusion when configuring non-OpenAI channels
- Keeps the UI clean and context-relevant

Scope:
- web/src/components/table/channels/modals/EditChannelModal.jsx

No backend logic affected.

web/src/components/table/channels/modals/EditChannelModal.jsx

@@ -1592,6 +1592,7 @@ const EditChannelModal = (props) => {
                     </div>
                   </div>
 
+                  {inputs.type === 1 && (
                     <Form.Switch
                       field='force_format'
                       label={t('强制格式化')}
@@ -1600,6 +1601,7 @@ const EditChannelModal = (props) => {
                       onChange={(value) => handleChannelSettingsChange('force_format', value)}
                       extraText={t('强制将响应格式化为 OpenAI 标准格式（只适用于OpenAI渠道类型）')}
                     />
+                  )}
 
                   <Form.Switch
                     field='thinking_to_content'