Summary

Fixes a regression in Ash.Scope.ToOpts implementation for Map where top-level :shared keys were not being properly converted to context options.

Problem

The Ash.Scope.ToOpts implementation for Map was only checking for :shared nested under a :context key:

%{context: %{shared: %{application: "test"}}}  # ✅ Worked
%{shared: %{application: "test"}}              # ❌ Didn't work

However, the deprecated Ash.Context.to_opts/1 documentation indicates it should handle both patterns, and client code was expecting the top-level pattern to work.

Solution

Updated the get_context/1 function in Ash.Scope.ToOpts for Map to check both patterns:

1. First checks for nested :context key (existing behavior)
2. Falls back to top-level :shared key (new behavior)
3. Maintains backward compatibility and proper priority

Changes

• lib/ash/scope.ex: Updated Ash.Scope.ToOpts implementation for Map
• test/scope_test.exs: Added comprehensive regression tests (7 test cases)

Testing

• ✅ All existing tests pass (1952 tests, 0 failures)
• ✅ New regression tests cover both patterns and edge cases
• ✅ Verified fix with client reproduction case
• ✅ Backward compatibility maintained

Contributor Checklist

• I accept the AI Policy, or AI was not used in the creation of this PR.
• Bug fixes include regression tests
• Chores
• Documentation changes
• Features include unit/acceptance tests
• Refactoring
• Update dependencies