fix(types): preserve JSON paths starting with setting names

[fallintoplace]

Summary

JSON type parsing filtered max_dynamic_paths and max_dynamic_types using prefix matching. This caused valid typed paths such as max_dynamic_paths_used UInt64 to be discarded as settings.

Recognize these entries as settings only when followed by an assignment, while leaving SKIP handling unchanged.

Tests

• Added real-server coverage for exact and prefixed path names
• Covered both affected setting names and preserved spaced assignment parsing
• dotnet test ClickHouse.Driver.Tests --framework net10.0 --property WarningLevel=0 --filter "Name~ShouldSelectDataWithComplexHintedJsonType|Name~PathStartingWithMaxDynamic|Name~PathNamedMaxDynamicPaths"
• dotnet build ClickHouse.Driver.sln --framework net10.0 --property WarningLevel=0

Checklist

• Unit and integration tests covering the common scenarios were added
• A human-readable description of the changes was provided to include in CHANGELOG

[Copilot]

Pull request overview

This PR fixes a JSON type-hint parsing bug in JsonType where typed JSON paths whose names start with max_dynamic_paths / max_dynamic_types were incorrectly treated as JSON settings and therefore ignored, causing values to be decoded as dynamic instead of using the intended hinted type. It also adds real-server test coverage and documents the fix in release notes and the changelog.

Changes:

• Tightened JSON “setting” detection to only treat max_dynamic_paths / max_dynamic_types as settings when they use assignment syntax (...=...), while keeping SKIP handling intact.
• Added real-server tests covering typed paths that start with or equal the affected setting names, plus spaced assignment parsing (max_dynamic_paths = 10).
• Documented the bug fix in both CHANGELOG.md and RELEASENOTES.md.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
ClickHouse.Driver/Types/JsonType.cs	Adjusts filtering logic so typed-path hints aren’t dropped when their names start with JSON setting names.
ClickHouse.Driver.Tests/Types/JsonTypeTests.cs	Adds real-server coverage for affected path names and spaced assignment settings syntax.
CHANGELOG.md	Adds a user-facing bug-fix entry for the JSON typed-path parsing correction.
RELEASENOTES.md	Adds a release-notes bug-fix entry describing the JSON typed-path parsing correction.

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
ClickHouse.Driver/Types/JsonType.cs	87.50%	0 Missing and 1 partial ⚠️

📢 Thoughts on this report? Let us know!

[alex-clickhouse]

Hi, thanks for this. Looks good, just one small thing with the tests: let's add some cases with a variety of spaces around the assignment, eg something along the lines of:

[Test]
[TestCase("JSON(max_dynamic_paths = 10, a String)")]
[TestCase("JSON(max_dynamic_paths  =  10, a String)")]
[TestCase("JSON(max_dynamic_types =3, a String)")]
public void ParseShouldExcludeSettingsFromHintedPaths(string typeString)
{
   var type = (JsonType)TypeConverter.ParseClickHouseType(typeString, TypeSettings.Default);
   Assert.That(type.HintedTypes.Keys, Is.EquivalentTo(new[] { "a" }));
}

[alex-clickhouse]

LGTM, thank you for your contribution!