Dates in $filter parsed as DateTime with DateTimeKind.Unspecified

[2002Ezio]

I'm working on the breakdance-net5, with the latest postgres provider.

Npgsql 6.0 has a breaking change around timestamp mapping which breaks querying via OData. In order to query a Postgres column of type 'timestamp with time zone', the corresponding DateTime needs to have Kind = DateTimeKind.Utc.

However, all dates in the $filter clause are parsed with DateTimeKind.Unspecified, which causes Npgsql to throw an exception and results in OData returning an invalid and incomplete JSON response.

Setting builder.Select().Expand().Filter().OrderBy().MaxTop(100).Count().SetTimeZoneInfo(TimeZoneInfo.Utc);

Assemblies affected
This behavior is observed using the latest bits in the branch titled "breakdance-net5"

Reproduce steps
Uses a postgres data base with the latest npgsql provider and try to filter an entity by date and time

https://localhost:44307/v_errorlog?$orderby=datetimeinlocaltime desc&$top=10&$filter=(datetimeinlocaltime ge 2022-03-10T16:43:00Z) and (datetimeinlocaltime lt 2022-03-10T16:44:00Z)&$count=true

Actual Result
write DateTime with Kind=Unspecified to PostgreSQL type 'timestamp with time zone', only UTC is supported. Note that it's not possible to mix DateTimes with different Kinds in an array/range. See the Npgsql.EnableLegacyTimestampBehavior AppContext switch to enable legacy behavior.