Fix improper type names in sample templates

[kzu]

TSelf/TId are not required (pending an analyzer to enforce this).

[devlooped-bot]

🧪 Details on Microsoft Windows 10.0.20348

✅ StructId.ConstructorGeneratorTests.GenerateRecordConstructor
✅ StructId.ConstructorGeneratorTests.GenerateRecordConstructorInGlobalNamespace
✅ StructId.ConstructorGeneratorTests.GenerateRecordStringConstructor
✅ StructId.DapperGeneratorTests.GenerateHandler
✅ StructId.DapperGeneratorTests.SkipsUnsupported
✅ StructId.Functional.FunctionalTests.CustomTemplate
✅ StructId.Functional.FunctionalTests.Dapper
✅ StructId.Functional.FunctionalTests.EntityFramework
✅ StructId.Functional.FunctionalTests.EqualityTest
✅ StructId.Functional.FunctionalTests.GuidImplementUtf8SpanFormattable
✅ StructId.Functional.FunctionalTests.ImplicitAndExplicitCast
✅ StructId.Functional.FunctionalTests.Newtonsoft
✅ StructId.Functional.FunctionalTests.SpanFormattableIdsImplementISpanFormattable
✅ StructId.Functional.FunctionalTests.StringIdDoesNotImplementISpanFormattable
✅ StructId.NewtonsoftJsonGeneratorTests.DoesNotGenerateIfNewtonsoftJsonNotPresent
✅ StructId.NewtonsoftJsonGeneratorTests.GenerateIfNewtonsoftJsonPresent
✅ StructId.ParsableGeneratorTests.GenerateParseable
✅ StructId.ParsableGeneratorTests.GenerateStringParseable
✅ StructId.ParsableGeneratorTests.NoParseableAvailable
✅ StructId.RecordAnalyzerTests.ClassNotStructId
✅ StructId.RecordAnalyzerTests.PartialRecordStructNotReadonly
✅ StructId.RecordAnalyzerTests.PartialStringRecordStructNotReadonly
✅ StructId.RecordAnalyzerTests.ReadonlyRecordStructNoStructId
✅ StructId.RecordAnalyzerTests.ReadonlyRecordStructNotPartial
✅ StructId.RecordAnalyzerTests.ReadonlyRecordStructWithNonValueConstructor
✅ StructId.RecordAnalyzerTests.ReadonlyStringRecordStructNotPartial
✅ StructId.RecordAnalyzerTests.RecordStructNoStructId
✅ StructId.RecordAnalyzerTests.RecordStructNotReadonlyNorPartial
✅ StructId.RecordAnalyzerTests.StructNotStructId
✅ StructId.RecordCodeFixTests.AddPartialKeyword
✅ StructId.RecordCodeFixTests.AddReadOnlyModifier
✅ StructId.RecordCodeFixTests.ChangeRecordStruct
✅ StructId.RecordCtorCodeFixTests.RemoveCtor
✅ StructId.RecordCtorCodeFixTests.RenameValue
✅ StructId.TemplateGeneratorTests.GenerateComparable
✅ StructId.TemplateGeneratorTests.GenerateComparableExplicitImpl

from dotnet-retest v0.6.3 on .NET 8.0.11 with 💜