Fix CreateParameter for collection shape mismatch with element value converters

[hostage2222]

When a primitive collection has an element value converter and a parameter uses a different collection shape (e.g. List vs T[]), type mapping inference for Intersect(...).Any() → && can apply the column mapping to that parameter. CreateParameter skipped materialization whenever a converter was present, so Sanitize threw InvalidCastException (IConvertible).

Normalize mismatched values to TConcreteCollection before Sanitize, without rewriting values that already match the converter model type. There is no extra materialization on existing paths — only the new mismatch cases take that branch; existing tests do not.

Fixes #3805

[Copilot]

Pull request overview

Fixes a failure in array parameter creation when an element value converter is present and the parameter value’s collection shape doesn’t match the inferred mapping shape (e.g. List<T> passed where an T[] mapping is applied), which previously could cause ValueConverter.Sanitize to throw InvalidCastException (notably in Intersect(...).Any() translated to &&).

Changes:

• Update NpgsqlArrayTypeMapping.CreateParameter to normalize non-matching values to the supported concrete collection shape (array or List<T>) even when a converter exists, but without rewriting values that already match the converter’s model CLR type.
• Add unit tests covering CreateParameter with value converters across array/list/immutable-list inputs.
• Add functional tests covering Intersect(...).Any() over value-converted primitive collections with array/list/immutable-list parameters.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/EFCore.PG/Storage/Internal/Mapping/NpgsqlArrayTypeMapping.cs	Normalizes mismatched collection-shape parameter values prior to converter sanitization to avoid invalid casts.
test/EFCore.PG.Tests/Storage/NpgsqlTypeMappingSourceTest.cs	Unit coverage for CreateParameter behavior across list/array/immutable-list inputs with converters.
test/EFCore.PG.FunctionalTests/Query/ArrayListQueryTest.cs	Functional coverage for Intersect(...).Any() over a value-converted list when the parameter shape varies.
test/EFCore.PG.FunctionalTests/Query/ArrayArrayQueryTest.cs	Functional coverage for Intersect(...).Any() over a value-converted array when the parameter shape varies.