fix: correctly escape generic types in generated XML-Doc

[vbreuss]

This PR fixes XML documentation generation for generic types by ensuring proper XML escaping of type parameters in generated documentation comments.

Key Changes:

• Added .EscapeForXmlDoc() calls to generic type parameters in method/delegate signatures within XML documentation
• Added test case to verify mocking of protected virtual members

[Copilot]

Pull request overview

This PR fixes XML documentation generation for generic types by ensuring proper XML escaping of type parameters in generated documentation comments.

Changes:

• Added .EscapeForXmlDoc() calls to generic type parameters in method/delegate signatures within XML documentation
• Added test case to verify mocking of protected virtual members

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
Source/Mockolate.SourceGenerators/Sources/Sources.ForMock.Extensions.cs	Applied XML escaping to generic type parameters in four locations where method/delegate parameter types appear in XML doc comments
Tests/Mockolate.Tests/Protected/ProtectedMockTests.cs	Added test case for mocking classes with only protected virtual members

[github-actions]

Test Results

    14 files  ±0      14 suites  ±0   5m 42s ⏱️ +27s
 2 166 tests +1   2 165 ✅ +1  1 💤 ±0  0 ❌ ±0 
14 497 runs  +7  14 496 ✅ +7  1 💤 ±0  0 ❌ ±0 

Results for commit ad27a1d. ± Comparison against base commit ecb3045.

♻️ This comment has been updated with latest results.

[github-actions]

🚀 Benchmark Results

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.3 LTS (Noble Numbat)

AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.102

[Host] : .NET 10.0.2 (10.0.2, 10.0.225.61305), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
Simple_Mockolate	1.545 μs	0.0093 μs	0.0082 μs	0.2270	-	3.72 KB
Simple_Moq	178.600 μs	0.5448 μs	0.4550 μs	0.4883	-	14.77 KB
Simple_NSubstitute	5.638 μs	0.0098 μs	0.0082 μs	0.5569	0.0076	9.14 KB
Simple_FakeItEasy	6.569 μs	0.0515 μs	0.0482 μs	0.4959	-	8.11 KB

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This is addressed in release v0.52.0.