Replace DistributedLock meta-package with DistributedLock.Core in Elsa.Common

[Copilot]

Elsa.Common was referencing the DistributedLock meta-package, which transitively pulls in all provider implementations (SQL Server, Redis, PostgreSQL, Azure, FileSystem, etc.) despite only using the core abstractions.

Changes

• Replace DistributedLock package reference with DistributedLock.Core in Elsa.Common.csproj

The module only uses interfaces from Medallion.Threading namespace (IDistributedLock, IDistributedLockProvider, IDistributedSynchronizationHandle), which are provided by DistributedLock.Core. Provider-specific implementations remain available to modules that explicitly need them (e.g., Elsa.Workflows.Runtime with DistributedLock.FileSystem).

Original prompt

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This section details on the original issue you should resolve

<issue_title>Avoid bringing unneeded references to the project output</issue_title>
<issue_description>https://github.com/elsa-workflows/elsa-core/blob/90dbdc48d935eb9e1d6aeb765bce321ab271b3f6/src/modules/Elsa.Common/Elsa.Common.csproj#L20C9-L20C55

This meta-package will reference all the libraries from providers that won't be used anywhere on the project, and should be replaced just with DistributedLock.Core for the needed abstractions.</issue_description>

Comments on the Issue (you are @copilot in this section)

@sfmskywalker Yep, nice catch 👍🏻

• Fixes Avoid bringing unneeded references to the project output #7160

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This change is 

[Copilot]

Pull request overview

This PR optimizes package dependencies by replacing the DistributedLock meta-package with DistributedLock.Core in the Elsa.Common module. This change eliminates unnecessary transitive dependencies from provider implementations (SQL Server, Redis, PostgreSQL, Azure, FileSystem, etc.) that are not used by this module.

Key Changes:

• Replace DistributedLock with DistributedLock.Core package reference in Elsa.Common.csproj

The module only requires the core abstractions (IDistributedLock, IDistributedLockProvider, IDistributedSynchronizationHandle) from the Medallion.Threading namespace, which are all provided by DistributedLock.Core. Modules that need specific provider implementations (like Elsa.Workflows.Runtime with DistributedLock.FileSystem) already reference them directly.