Explicit link in table in eval-rst is incorrectly implicit

[tucked]

Describe the bug

If you make a table in an {eval-rst} block in an .md document and that table has a cell with an explicit link in it, then that link will incorrectly be rendered as an implicit link (i.e. an anchor) instead of an explicit one.

To Reproduce

```{eval-rst}
+------------------------+------------+----------+
| Header row, column 1   | Header 2   | Header 3 |
+========================+============+==========+
| body row 1, column 1   | column 2   | column 3 |
+------------------------+------------+----------+
| `body row 2`_          | Cells may span        |
+------------------------+-----------------------+

.. _body row 2: https://example.com
```

Expected behavior

"body row 2" is a link to https://example.com

Observed behavior

"body row 2" is a link to #body-row-2

Environment

• Python Version: 3.8.0
• Package versions:

  alabaster==0.7.12,attrs==21.2.0,Babel==2.9.1,certifi==2021.5.30,chardet==4.0.0,docutils==0.16,future==0.18.2,idna==2.10,imagesize==1.2.0,Jinja2==3.0.1,markdown-it-py==1.1.0,MarkupSafe==2.0.1,mdit-py-plugins==0.2.8,myst-parser==0.14.0,packaging==20.9,Pygments==2.9.0,pyparsing==2.4.7,pytz==2021.1,PyYAML==5.4.1,requests==2.25.1,snowballstemmer==2.1.0,Sphinx==3.5.4,sphinxcontrib-applehelp==1.0.2,sphinxcontrib-confluencebuilder==1.5.0,sphinxcontrib-devhelp==1.0.2,sphinxcontrib-htmlhelp==2.0.0,sphinxcontrib-jsmath==1.0.1,sphinxcontrib-qthelp==1.0.3,sphinxcontrib-serializinghtml==1.1.5,urllib3==1.26.5
  

• Operating System: Ubuntu 18.04.5 LTS

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[choldgraf]

As a potential workaround, any reason you are not using markdown tables ?

[tucked]

I need multiline cells (for bulleted lists), and I couldn't figure out how to do it in markdown without using raw HTML (which doesn't seem to get the Sphinx style applied).

[michaelosthege]

Adding some information to the example at the top:

With this 👇 one can add a table title and label and set column widths.

```{eval-rst}
.. table:: This is a cool table
    :name: tab_cool
    :widths: 50 20 20 20

    +------------------------+------------+----------+----------+
    | Header row, column 1   | Header 2   | Header 3 | Header 4 |
    |                        |            |          |          |
    | (header rows optional) |            |          |          |
    +========================+============+==========+==========+
    | body row 1, column 1   | column 2   | column 3 | column 4 |
    +------------------------+------------+----------+----------+
    | body row 2             | Cells may span columns.          |
    +------------------------+------------+---------------------+
    | body row 3             | Cells may  | - Table cells       |
    +------------------------+            | - contain           |
    | body row 4             | span rows. | - body elements.    |
    +------------------------+------------+---------------------+
```

Note that in contrast to the grid-table documentation I had to add empty lines for the line breaks to end up in my final PDF.