bug: <ion-back-button> going back removes previously set search parameters

# Bug Report

**Version(s):**
Ionic: **5.0.7**
Stencil: **1.12.4**

**Current behavior:**

Using the stencil ionic pwa starter, starting at the home component with a url that has search parameters:

`http://localhost:3333/?name=value`

Navigate to the profile page:

`http://localhost:3333/profile/ionic`

Then use `` to navigate back:

`http://localhost:3333`

**Expected behavior:**

Maintain the query parameters when navigating back (if possible):

`http://localhost:3333/?name=value`

**Other information:**

Here is a repo, its a modified ionic pwa starter, with a searchbar at the top of the home layout to change query props:

https://github.com/ajmchambers/ionic-router-example-2


Not really sure what the intended behaviour should be for the `` so this may be considered a feature request rather than a bug.

The back button seems to use `` to go back, maybe the search parameter string at the time of navigating could be added into the view history or something like that.

Reproduce the navigation flow in the linked ionic-router-example-2 repository, starting at the query-parameter URL and using ion-back-button to return from the profile page. Read the ion-back-button and ion-nav navigation behavior; done means returning to the home page preserves the original query parameters, with the intended behavior confirmed by a regression test.

Written by the indexing model from the issue text.