This is only the first step for doing CALL in Tier 2. The next step involves tracing into the called code object. After that we'll have to do the remaining CALL specialization. Finally we'll have to tweak various things like KW_NAMES, and possibly move the NULL (for method calls) above the callable (that's 107788). But those are things for future PRs.

Note: this moves setting frame->return_offset directly in front of DISPATCH_INLINED(), to make it easier to move it into _PUSH_FRAME.

• Rebase on GH-105848: Simplify the arrangement of CALL's stack #107788
• Redo using Mark's ideas
• Add back a call to _Py_EnterRecursivePy
• Add tests

• Issue: Call design for Tier 2 (uops) interpreter #106581