Currently, column aliases which is used for eager loading are calculated
before constructing all table aliases in FROM clause.

`JoinDependency#join_constraints` constructs table aliases for `joins`
first, and then always re-constructs table aliases for eager loading.

If both `joins` and eager loading are given a same table association,
the re-construction would cause the discrepancy between column aliases
and table aliases.

To avoid the discrepancy, the column aliases should be calculated after
all table aliases are constructed.

Fixes #30603.