[clang] Check ValueDependent instead of InstantiationDependent before...

[clang] Check ValueDependent instead of InstantiationDependent before executing the align expr for builtin align functions.

in general, value dependent is a subset of instnatiation dependent. This
would allows us to produce diagnostics for the align expression (which
is instantiation dependent but not value dependent).

Differential Revision: https://reviews.llvm.org/D83074