For a given package, `ignore` versions by regex

When there is a new update for kotlinx-coroutines-core we always get a update for the `*-native-mt` version but we want the "normal" version, ex `1.5.0` instead of `1.5.0-native-mt`. How would that be possible?

```
version: 2

updates:
- package-ecosystem: maven
directory: "/"
schedule:
interval: weekly
day: "sunday"
time: "04:00"
open-pull-requests-limit: 10
ignore:
- dependency-name: org.jetbrains.kotlinx:kotlinx-coroutines-core
versions:
- "*-native-mt"
```

Start by tracing Maven update handling for the ignore block shown in the issue, then compare current version matching with the requested wildcard behavior. Done means the configuration can exclude *-native-mt versions for this package without suppressing 1.5.0, with coverage for both cases.

Written by the indexing model from the issue text.