feat(errors): add polymorphism diagnostics #157

Job	Run time
Runtime Smoke Checks	3m 58s
Valgrind Checks	3m 57s
Standalone Package Export Check	4m 27s
Configuration Coverage	7m 4s
Build (clang)	3m 30s
Build (gcc)	3m 51s
Static Analysis	7m 24s
CLI Strict CI Summary	4s
	34m 15s

Provide feedback