Support serialization of non(de)serializable values

[sfmskywalker]

=== auto-pr-body ===

Summary:
This pull request updates the logic for setting up persistence for the EF Core database provider. It also adds a new class SafeDictionaryConverter and updates the BasicSerializationProvider class.

List of changes:

• Updated OnSaveAsync() and OnLoadAsync() to use the IActivityStateSerializer interface and JsonSerializer, respectively.
• Added a new class SafeDictionaryConverter that safely serializes a dictionary of objects, even if some of the objects are not serializable.
• Added a new class SafeDictionaryConverterFactory that creates instances of SafeDictionaryConverter.
• Updated BasicSerializationProvider to add the SafeDictionaryConverterFactory to the list of converters, and to enable reference handling.
• Changed the EF Core workflow instance and management persistence feature methods to use Elsa database options.
• Updated the workflow management feature and EF Core workflow management persistence feature names.
• Added logic to the activity execution log store to save activity execution records to the database.

Refactoring Target:

• Refactor OnSaveAsync() and OnLoadAsync() into a single method to improve code readability.
• Refactor exception handling for the PolymorphicObjectConverter for robustness.