[Task] <Policy supports black and white list settings>

### Description

相关设置的地方：收敛策略、静默策略、通知策略
需求描述：比如我想给某几个标签设置策略，则设置白名单。我想排除几个标签设置策略，则设置白名单。
现状：只能设置白名单，如果有 100 个标签，想排除其中一个，就得勾选 99 个标签，很麻烦。

### Task List

_No response_

Start by locating the convergence, silence, and notification policy settings and tracing how their current whitelist behavior is implemented. Define how each policy should support selecting included or excluded tags, then verify that the three settings areas handle both modes consistently.

Written by the indexing model from the issue text.