vcpkg.json and portfile.cmake disagreed.
```
vcpkg.json: !osx & !uwp & (linux | !static)
portfile.cmake: !osx & !uwp & (!windows | !(static | staticcrt))
```
Trying to get portfile.cmake to agree:
```
!osx & !uwp & (!windows | !(static | staticcrt)) given
!osx & !uwp & (!windows | (!static & !staticcrt)) demorgan
```
Considering !osx is earlier, I'm assuming Linux and !Windows are equivalent here:
```
!osx & !uwp & (linux | (!static & !staticcrt)) (above)
```
I'm assuming that portfile.cmake just never considered staticrt and linux, so I'm adding that condition.
In support of https://github.com/microsoft/vcpkg/pull/21502
