Refactor instance level objects to not use icd_index #707

Job	Run time
codegen	14s
chromium	1m 30s
iOS	39s
linux (gcc, g++, Debug, ubuntu-20.04)	2m 24s
linux (gcc, g++, Debug, ubuntu-22.04)	3m 5s
tvOS	47s
linux-32 (Debug)	47s
linux (gcc, g++, Release, ubuntu-20.04)	6m 13s
linux (gcc, g++, Release, ubuntu-22.04)	6m 21s
linux-32 (Release)	49s
linux (clang, clang++, Debug, ubuntu-20.04)	1m 56s
linux-32-no-asm	36s
linux (clang, clang++, Debug, ubuntu-22.04)	2m 41s
linux-no-asm	3m 9s
linux (clang, clang++, Release, ubuntu-20.04)	3m 58s
linux (clang, clang++, Release, ubuntu-22.04)	4m 36s
mac (Debug, APPLE_STATIC_LOADER=ON)	31s
mac (Debug, APPLE_STATIC_LOADER=OFF)	46s
Universal Binary Testing (STATIC ON) w/ Ninja	36s
mac (Release, APPLE_STATIC_LOADER=ON)	1s
mingw	3m 17s
Universal Binary Testing (STATIC ON) w/ Xcode	14s
mac (Release, APPLE_STATIC_LOADER=OFF)	30s
Universal Binary Testing (STATIC OFF) w/ Ninja	35s
mingw-no-asm	49s
Universal Binary Testing (STATIC OFF) w/ Xcode	38s
mingw-no-asm-explicit	44s
windows_clang (clang, Debug)	1m 45s
windows_vs (Win32, Debug)	1m 35s
windows_clang (clang, Release)	1m 25s
windows_vs-no-asm (Win32)	1m 45s
windows_clang (clang-cl, Debug)	1m 37s
windows_vs (Win32, Release)	1m 38s
windows_vs-no-asm (x64)	1m 48s
windows_clang (clang-cl, Release)	1m 7s
windows_vs (x64, Debug)	1m 33s
windows_vs (x64, Release)	1m 27s
	1h 4m 6s

Provide feedback