Complete runtime arrays and condition hierarchy

[takeokunn]

Summary

• preserve adjustable, fill-pointer, displaced, and bit-vector array behavior in runtime array construction
• add managed-array metadata constants and ANSI runtime condition subclasses
• add runtime debugger-hook escalation and regression tests

Verification

• nix run .#test (1057 passed, 0 failed)
• nix flake check (all checks passed)

src/runtime-region.lisp was not changed.