[Feature] Preserve dataset list filters when navigating back from a dataset detail page

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### 1. Is this request related to a challenge you're experiencing? Tell me about your story.
When I'm on the Knowledge / Datasets list page (`/datasets`), I often filter the list by keyword or tags to find a specific dataset. After entering a dataset detail page and clicking the browser Back button, all filters are reset: the search box is empty and the tag filters are cleared. I have to re-enter the filters every time.

I found that the `view` switcher (legacy/new) is preserved because it is stored in the URL via `useQueryState`, and the Apps list already persists search keywords in the URL via `useQueryStates`. However, the dataset list filters are kept only in local component state and are lost when the list component unmounts on navigation.

### 2. Additional context or comments

Relevant code locations:

- `web/app/components/datasets/list/index.tsx`
- `keywords` and `tagFilterValue` use `useState`
- `includeAll` uses `useBoolean`
- `web/app/components/apps/list.tsx`
- Persists list filters in the URL via `useQueryStates`
- `web/app/components/apps/query-params.ts`
- Uses `nuqs` parsers with debounced URL updates for the keyword input

Suggested fix:
Persist the dataset list filters (`keywords`, `tag_ids`, and `include_all`) in the URL, following the same pattern already used by the Apps list. For example, move these values to `useQueryStates` with `nuqs` parsers and use a debounced URL update for the keyword input. This would make filters survive browser Back navigation, page refresh, and shareable links.

Dify version: `1.17.0`
Deployment: Self Hosted (Docker)

### 3. Can you help us with this feature?
- [x] I am interested in contributing to this feature.

Start in web/app/components/datasets/list/index.tsx, then compare its local filter state with the URL-state pattern in web/app/components/apps/list.tsx and web/app/components/apps/query-params.ts. Persist keywords, tag_ids, and include_all in the dataset URL, and verify that browser Back navigation, refreshes, and shareable links retain the filters.

Written by the indexing model from the issue text.