…ent tables

Fix to #26451 - Temporal Table: Owned Entities support
Fix to #26469 - Query: enable temporal tables for table splitting scenarios
Fix to #26705 - Query: model building for temporal table with explicitly defined period columns could fail if conventions are executed in a delayed fashion

Just like any other nav expansion, this only works for AsOf operation.

Added extensibility point to SharedTypeEntityExpandingExpressionVisitor so that we can create temporal table expressions representing owned entities, if their owner is also a temporal table expression.
We also need to match TableExpression information with ITable metadata, for provider specific table-like expressions.

Relaxed validation for table splitting when the table is temporal - it's now allowed as long as all (base type) entities mapped to this table have congruent period and history table mappings.

Column period property is now created explicitly in the temporal table builder rather than relying on conventions to avoid scenario when conventions are delayed and the period property they are supposed to create is not ready by the time we need it.