Include versions in externals error message (#68871)
Now the expected and actual version numbers are included in the error
message:
```
Package @libsql/client (serverExternalPackages or default list) can't be external
The request @libsql/client matches serverExternalPackages (or the default list), but it can't be external:
The package resolves to a different version when requested from the project directory (0.9.0) compared to the package requested from the importing module (0.6.2).
Make sure to install the same version of the package in both locations.
```
