
**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
return page == current
    for page in pages:
        vals = {
            'is_active': 'active' if is_current(current_page, page) else '',
            'href_link': void_link
            if is_current(current_page, page)
            else f'?{get_params(page=page, search=search, status=status)}',
            'page_num': page + 1,
        }
        output.append(page_node.format(**vals))  
    is_disabled = 'disabled' if current_page >= num_of_pages - 1 else ''
    page_link = (
        void_link
        if current_page >= num_of_pages - 1
        else f'?{get_params(page=current_page + 1, search=search, status=status)}'
    )
    output.append(next_node.format(href_link=page_link, disabled=is_disabled))  
    last_node_link = (
        void_link if is_disabled else f'?{get_params(page=last_page, search=search, status=status)}'
    )
    output.append(
        last_node.format(
            href_link=last_node_link,
            disabled=is_disabled,
        )
    )
    output.append(Markup('</ul>'))
    return Markup('\n'.join(output))
def epoch(dttm):