Merge pull request #14582 from briansull/cleanup-iconhdl

Cleanup IconHandle nodes

diff --cc src/jit/compiler.h
Simple merge

diff --cc src/jit/compiler.hpp
Simple merge

diff --cc src/jit/gentree.cpp
Simple merge

diff --cc src/jit/gentree.h
Simple merge

diff --cc src/jit/importer.cpp
Simple merge

diff --cc src/jit/instr.cpp
Simple merge

diff --cc src/jit/morph.cpp
Simple merge