fix(channel): 修复前台自定义渠道模型配置抽屉空白死锁，并在启动时保护管理员能力配置 (#360)

Co-authored-by: Danborad <danborad@github.com>

web/src/lib/model-capabilities.ts

@@ -64,6 +64,7 @@ export type VideoCapabilityConfig = {
         values?: number[];
         default: number;
     };
+    durationSupported?: boolean;
     ratios: string[];
     defaultRatio: string;
     resolutions: string[];