Add C# errors introduced in C# 12 to appropriate files

[BillWagner]

Contributes to #45118

These compiler errors and warnings were based on features already added to grouped files. Add these there as well.

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Internal previews

📄 File	🔗 Preview link
docs/csharp/language-reference/compiler-messages/array-declaration-errors.md	Resolve errors and warnings in array and collection declarations and initialization expressions
docs/csharp/language-reference/compiler-messages/inline-array-errors.md	Resolve errors related to inline arrays
docs/csharp/language-reference/compiler-messages/lambda-expression-errors.md	Errors and warnings when using lambda expressions and anonymous functions
docs/csharp/language-reference/compiler-messages/ref-modifiers-errors.md	Errors and warnings associated with reference parameters, variables, and returns
docs/csharp/language-reference/compiler-messages/source-generator-errors.md	docs/csharp/language-reference/compiler-messages/source-generator-errors
docs/csharp/language-reference/toc.yml	docs/csharp/language-reference/toc
docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md	C# 12 errors begin here

[Copilot]

Pull Request Overview

This PR adds C# 12 compiler error codes to their appropriate documentation files based on the features they relate to. The changes remove these error codes from the generic "catch-all" file and distribute them to specific error documentation files where they can be properly documented with context.

• Removes 12 CS9xxx error codes from the generic error page
• Adds these error codes to 6 specialized documentation files
• Updates the table of contents to reflect the new error code locations

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
sorry-we-don-t-have-specifics-on-this-csharp-error.md	Removes 12 error codes that are now documented elsewhere, keeping only 3 that belong in the generic file
toc.yml	Updates displayName lists to include newly categorized error codes in their respective sections
source-generator-errors.md	Adds 5 interceptor-related error codes (CS9231-CS9235) with detailed documentation
ref-modifiers-errors.md	Adds CS9205 for interpolated string syntax errors
lambda-expression-errors.md	Adds CS9236 informational message for lambda binding performance
inline-array-errors.md	Adds CS9125 for inline array attribute parameter validation
array-declaration-errors.md	Adds 5 collection expression error codes (CS9212-CS9215, CS9222)