This implements the equivalent of 07443e2d41 in Jit64 and JitArm64.
Aims to fix https://bugs.dolphin-emu.org/issues/13865.

This doesn't affect any existing callers, because all existing callers
use quad registers.

JitArm64: Add missing ORR pattern in MOVI2RImpl

The instruction implementations that were shifting the size by 4 would
emit an incorrect instruction when given a size of 64. The correct
implementation is to count the number of leading or trailing zeroes in
the size parameter, which is what IntLog2 does.

No callers are affected by this, as they all use sizes other than 64.
Actually, some of these instructions are even invalid with a size of 64,
but I'm changing them anyway for consistency with the others.

Just for performance.

We should attempt to use not only mirrored versions of the immediate as
an ORR base, but also the immediate itself. This lets us emit certain
64-bit constants using fewer instructions.

Found via `codespell -q 3 -S "./Externals,./Data/Sys/wiitdb-??.txt,*.po,*.pot" -L andf,asnd,bootup,brocken,bufferin,clen,collet,datas,delt,diety,extint,fpr,inout,inport,interm,nd,nin,ontop,pixelx,re-use,re-used,sav,stateman,strat,transer,wil`