updater: prefixed release tags (e.g. cli@0.47.0) can't be tracked #181

Summary

The updater can't track dependencies from monorepos that tag releases with a product prefix, such as cli@0.47.0 in getsentry/toolkit, where the new Sentry CLI is now released.

What happened

getsentry/sentry-unreal tracks the CLI in a .properties file. Setting pattern: '^cli@[0-9.]+$' selects the right tags, but every tag is then dropped by sort-versions.ps1. GetComparableVersion only strips a leading v before parsing semver:

WARNING: Failed to parse string 'cli@0.47.0' as semantic version: ...

gh-title-pattern and script dependencies don't help: tags are always listed from the repository and sorted by the full tag name.

Displayed versions are affected the same way. PR titles and changelog entries would read cli@0.47.0 instead of v0.47.0, and the changelog anchor is built from the full tag (#cli@0470 instead of #0470).

Toolkit configures this through Craft workspaces (tagPrefix: "cli@", see getsentry/craft#847), so other repositories that adopt workspaces will produce the same <product>@X.Y.Z tags.