[ARM][KCFI] Fix bundle sizes to reflect worst-case expansion (#164917)

The KCFI_CHECK pseudo-instruction size for ARM got miscalculated. These
should represent worst-case expansion to ensure correct branch range
calculations and code layout.

Update the Size field for each ARM sub-architecture:

- ARM: 28 → 40 bytes (10 instructions @ 4 bytes when r3 spill needed)
- Thumb2: 32 → 34 bytes (mixed 16/32-bit instructions with r3 spill)
- Thumb1: 50 → 38 bytes (19 instructions @ 2 bytes with r2+r3 spills)

The ARM and Thumb2 sizes were underestimating the case where the target
register is r12, requiring r3 to be used as scratch and
spilled/restored. The Thumb1 size was overestimated and has been
corrected to the actual worst-case of 19 instructions.

0 files changed, 0 insertions, 0 deletions