
**Apache Airflow version**:
2.0.1

**Environment**:

- **OS**: Linux Mint 19.2 
- **Kernel**: 5.5.0-050500-generic #202001262030 SMP Mon Jan 27 01:33:36 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

**What happened**:

Seems that pagination doesn't work. I filter DAGs by tags and get too many results to get them at one page. When I click second page I'm redirected to the first one (actually, it doesn't matter if I click second, last or any other - I'm always getting redirected to the first one).

**What you expected to happen**:

I expect to be redirected to the correct page when I click number on the bottom of the page.

**How to reproduce it**:
1. Create a lot of DAGs with the same tag
2. Filter by tag
3. Go to the next page in the pagination bar

**Implementation example**:



```
from airflow import DAG
from airflow.utils.dates import days_ago
for i in range(200):
    name = 'test_dag_' + str(i)
    dag = DAG(
        dag_id=name,
        schedule_interval=None,
        start_date=days_ago(2),
        tags=['example1'],
    )
    globals()[name] = dag
```

airflow/www/utils.py
<a href="{href_link}" aria-controls="dags" data-dt-idx="3" tabindex="0">&raquo;</a>
</li>"""
    )
    page_node = Markup(
        """<li class="paginate_button {is_active}">
    <a href="{href_link}" aria-controls="dags" data-dt-idx="2" tabindex="0">{page_num}</a>
</li>"""
    )
    output = [Markup('<ul class="pagination" style="margin-top:0;">')]
    is_disabled = 'disabled' if current_page <= 0 else ''
    first_node_link = void_link if is_disabled else f'?{get_params(page=0, search=search, status=status)}'
    output.append(
        first_node.format(
            href_link=first_node_link,
            disabled=is_disabled,
        )
    )
    page_link = void_link
    if current_page > 0:
        page_link = f'?{get_params(page=current_page - 1, search=search, status=status)}'
    output.append(previous_node.format(href_link=page_link, disabled=is_disabled))  
    mid = int(window / 2)
    last_page = num_of_pages - 1
    if current_page <= mid or num_of_pages < window:
        pages = list(range(0, min(num_of_pages, window)))
    elif mid < current_page < last_page - mid:
        pages = list(range(current_page - mid, current_page + mid + 1))
    else:
        pages = list(range(num_of_pages - window, last_page + 1))
    def is_current(current, page):