Support normalization of objects for Z.DynamicLinq.Json

[StefH]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for normalization of JSON objects in arrays to ensure all objects have a consistent schema. This allows querying JSON arrays where not all objects contain the same properties.

Key Changes:

• Introduced normalization utilities for both System.Text.Json and Newtonsoft.Json implementations
• Added Normalize property to configuration classes with default value of true
• Added NormalizationNonExistingPropertyBehavior enum to control how missing properties are handled

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 25 comments.

Show a summary per file

File	Description
SystemTextJsonTests.cs	Added tests for array normalization functionality and behavior when normalization is disabled
NewtonsoftJsonTests.cs	Added similar normalization tests and removed commented-out code
NormalizeUtils.cs (SystemTextJson)	Implements JSON array normalization logic with schema building and object normalization
NormalizeUtils.cs (NewtonsoftJson)	Parallel implementation for Newtonsoft.Json library
SystemTextJsonParsingConfig.cs	Added Normalize property and normalization behavior configuration
NewtonsoftJsonParsingConfig.cs	Added corresponding normalization configuration properties
NormalizationNonExistingPropertyBehavior.cs	New enum defining how to handle missing properties during normalization (both libraries)
JsonValueInfo.cs	Internal struct for tracking JSON value type and schema information (both libraries)
JsonValueExtensions.cs	Extension method for getting JsonValueKind on pre-.NET 8 platforms
SystemTextJsonExtensions.cs	Integrated normalization into the query pipeline
NewtonsoftJsonExtensions.cs	Integrated normalization into the query pipeline

Comments suppressed due to low confidence (2)

test/System.Linq.Dynamic.Core.SystemTextJson.Tests/SystemTextJsonTests.cs:578

• This assignment to first is useless, since its value is never read.

        var first = result.First();

test/System.Linq.Dynamic.Core.SystemTextJson.Tests/SystemTextJsonTests.cs:591

• This assignment to array is useless, since its value is never read.

        var array = JsonDocument.Parse(data);

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