[BUG?] Matching tags: & operator no more implicit between tags and special property

[Samuel Loury <konubinix@gmail.com>]

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Hi. I've been using org-mode as PKMS for 13 years. Thanks for that
awesome tool.

After upgrading on main yesterday, I realized a change of behavior. I'm
not sure whether it is a bug or not.

The following tags query used to implicitly behave as a AND
"-tag-TODO=\"TODO\"".

It does not anymore.

To reproduce this, simply use the following content.

```
* TODO todo and tag                                                  :tag:
* TODO simply todo
* nothing
* only tag                                                              :tag:
```

And run the following code.

`(org-tags-view nil "-tag-todo=\"TODO\"")`

Before commit f689eb44f175fbbdc4e8ef0ad6f5201b10863438, this showed only
"nothing", as expected.

Now, it shows all the entries.

To get back to the old behavior, I need to explicitly add the boolean
operator & in between.

I attached the code of the example in this mail.

Hope that this bug report is useful.

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Konubinix
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