Update MA0053 to mention both class and record types

[Copilot]

Fix #914

The MA0053 rule already analyzes both classes and records (records are TypeKind.Class in Roslyn), but the rule title and documentation only mentioned "class".

Changes

• Analyzer: Updated rule title and message from "Make class sealed" to "Make class or record sealed"
• Documentation: Updated MA0053.md to reference both classes and records throughout configuration sections
• README files: Updated rule descriptions in tables and examples
• Configuration files: Updated comments in .editorconfig templates
• Tests: Added comprehensive tests for record types to validate analyzer behavior with records, including inheritance scenarios, interface implementation, and configuration options

The analyzer logic remains unchanged—records were already supported.

Original prompt

The rule MA0053 only mention class. However, record are also supported. Can you rename the rule and update the documentation file (MA0053.md)?

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[meziantou]

@copilot Can you also validate that the tests validate behavior with record? The file containing the tests is ClassMustBeSealedAnalyzerTests.cs.

[Copilot]

@copilot Can you also validate that the tests validate behavior with record? The file containing the tests is ClassMustBeSealedAnalyzerTests.cs.

I've added comprehensive tests for record types to match the coverage for classes. The tests now include:

• Record_Inherited_Diagnostic - validates records with inheritance are flagged and can be sealed
• Record_ImplementInterface_Diagnostic - validates records implementing interfaces are flagged
• Record_Public_NotReported - validates public records are not reported by default
• Record_Public_WithEditorConfig_Diagnostic - validates public records are reported when configured

These tests mirror the class test scenarios and confirm the analyzer properly handles records. Commit: 2a275f2

Warning

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I tried to connect to the following addresses, but was blocked by firewall rules:

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