docs: support unknown type

[Skn0tt]

No description provided.

[Copilot]

PR Overview

This PR adds support for the "unknown" type in the Java, Python, and C# formatters by introducing new case mappings in each file.

• In src/format_java.js, "unknown" is mapped to "[Object]".
• In src/format_python.js, "unknown" is mapped to "[Any]".
• In src/format_csharp.js, "unknown" is mapped to "[object]"+optionalSuffix.

Reviewed Changes

File	Description
src/format_java.js	Added "unknown" type mapping returning [Object].
src/format_python.js	Added "unknown" type mapping returning [Any].
src/format_csharp.js	Added "unknown" type mapping returning [object] with optionalSuffix.

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (3)

src/format_java.js:166

• Ensure test coverage is added for the new 'unknown' type mapping in the Java formatter.

      case 'unknown': return '[Object]';

src/format_python.js:117

• Ensure test coverage is added for the new 'unknown' type mapping in the Python formatter.

      case 'unknown': return '[Any]';

src/format_csharp.js:130

• Ensure test coverage is added for the new 'unknown' type mapping in the C# formatter.

      case 'unknown': return `[object]${optionalSuffix}`;