Fix DiscoverParentChildRelationship properties list

[NgJason]

TypeDescriptor.GetProperties incorrectly gets all properties for entityType, ignoring the property filtering set in OrmConfiguration.Conventions.GetEntityProperties

Imagine the code is set up as follows:

https://www.learndapper.com/relationships#dapper-one-to-many-relationships

The entry point of this bug is here:

FastCrud/Dapper.FastCrud/Mappings/AutoGeneratedEntityMapping.cs

Line 52 in a5941a1

var parentChildrenRelationships = this.DiscoverParentChildrenRelationships(entityType);

It calls TypeDescriptor.GetProperties

FastCrud/Dapper.FastCrud/Mappings/AutoGeneratedEntityMapping.cs

Line 122 in a5941a1

var parentChildrenPropGroups = TypeDescriptor.GetProperties(entityType)

which would return all properties for Category, including
public ICollection<Product> Products { get; set; }

The execution then leads the following lines / stack :

FastCrud/Dapper.FastCrud/Mappings/AutoGeneratedEntityMapping.cs

Line 167 in a5941a1

var childParentRelationships = this.DiscoverChildParentRelationships(childEntityType)

FastCrud/Dapper.FastCrud/Mappings/AutoGeneratedEntityMapping.cs

Line 71 in a5941a1

var entityColumnProperties = OrmConfiguration.Conventions.GetEntityProperties(entityType);

This line invokes

FastCrud/Dapper.FastCrud/Configuration/OrmConventions.cs

Line 169 in a5941a1

&& this.IsSimpleSqlType(propDesc.PropertyType));

which filters out all properties that are not IsSimpleSqlType

using the example provided earlier, this property is NOT returned:
public Category Category { get; set; }

causing the code to throw an error :

FastCrud/Dapper.FastCrud/Mappings/AutoGeneratedEntityMapping.cs

Line 181 in a5941a1

$"Unable to find any child-parent relationship for the child type '{childEntityType}' and the parent '{entityType}' when analyzing the navigation property '{parentChildrenNavigationProperty.Name}' on the parent entity.");

As observed, DiscoverParentChildren retrieves all properties , but DiscoverChildParentRelationships returns only the properties where IsSimpleSqlType == true.

I believe the parent fields should have the same filtering defined in OrmConfiguration.Conventions.GetEntityProperties, which is already extensible via overriding the virtual method.