Translate Enumerable.Concat over byte arrays #39345

Support translating Enumerable.Concat over byte[] properties mapped to scalar binary columns, including further composition:

byte[] suffix = [1, 2];

context.Entities.Where(e => e.Bytes.Concat(suffix).ToArray().Length == 6);
context.Entities.Select(e => e.Bytes.Concat(new byte[] { 1, 2 }).ToArray());

Neither the SQL Server nor SQLite provider currently implements this translation, and ByteArrayTranslationsTestBase has no shared Concat coverage (checked our EF 11 RC2 dependency and current main). Shared tests should cover parameters, inline/empty byte arrays, projections and composition such as Length and SequenceEqual.

EF's normalization/query-root processing also needs consideration: parameter-first prefix.Concat(e.Bytes) becomes Queryable.Concat, while inline array operands become InlineQueryRootExpression, complicating scalar binary translation.

Related PostgreSQL provider implementation: npgsql/efcore.pg#2200.