[AMDGPU][True16][CodeGen] update more GFX11Plus codegen test with true16 mode (#138600)
This is a NFC patch.
This patch duplicate GFX11plus runlines and apply them with
"+mattr=+real-true16" and "+mattr=-real-true16" on more gfx11/gfx12
tests. And then update the test with the update script