Describe the bug

C# 12 primary constructors with base class constructor calls fail to parse correctly. The tree-sitter-c-sharp
grammar's base_list rule only supports type names, not primary_constructor_base_type, causing classes like

class
   Foo(int x) : Base(x)  {}

to fail parsing.

To Reproduce

1. Create a file test.cs:

  public class ClubsController_V1(IClubsService clubsService) : ApiControllerBase(clubsService)
  {
  }

2. Run:
   bin/opengrep --dump-ast test.cs

3. Observe parsing error - the base class call ApiControllerBase(clubsService) is not recognized.

Working case (simple primary constructor without base call):

  public class NamedItem(string name)
  {
      public string Name => name;
  }

This parses correctly.

Working case (regular inheritance without primary constructor):

  class MyClass : BaseClass
  {
  }

This also parses correctly.

Expected behavior

C# 12 primary constructors with base class constructor invocations should parse correctly, as this is valid C#
12 syntax documented at https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/tutorials/primary-constructors

Root Cause

In grammar.js, the base_list rule (used for classes) only accepts types:
base_list: $ => seq(':', commaSep1($._type)),

But record_base (used for records) correctly supports primary_constructor_base_type:
record_base: $ => choice(
seq(':', commaSep1($._type_name)),
seq(':', $.primary_constructor_base_type, optional(seq(',', commaSep1($._type_name)))),
),

The fix would be to update base_list to also support primary_constructor_base_type.

Also confirmed same behaviour in Semgrep 1.150.0.