link-in-text-block is inconsistent with < br> elements

### Product

axe-core

### Product Version

4.8.2

### Latest Version

- [X] I have tested the issue with the latest version of the product

### Issue Description

#### Expectation
The link-in-text-block issue is only raised when the link is included in the text directly. Using an
as a seperator should consistently prevent this issue from being raised.

#### Actual
On some occasions when the < br> is included in a < a> tag then the issue is raised. If the < br> is placed in front of the < a> tag then it is not raised.

#### How to Reproduce
Error noticed using the standalone js module on the cards on this page: https://www.stmuv.bayern.de/themen/index.htm

These are the links:

The link in the left card is not being detected as an issue. This is the html:
`

Aktuelle Problemlagen untersucht das Bayerische Umweltministerium anhand fundierter wissenschaftlicher Erkenntnisse.



Forschung

`

The code on the right is being flagged as an issue:

The only difference is the placement of the < br> element. It should be consistently either an error or no error. Visually both options look the same.

Let mw know if you have any questions! :-)