Sema: Fix fnptr alignment safety checks to account for potential ISA tag.

As seen on e.g. Arm/Thumb and MIPS (MIPS16/microMIPS).

Fixes #22888.
fc7a0c4878Alex Rønne Petersen committed on 2/22/2025, 3:12:46 AMparentd31bda1
4 files changedLine totals unavailable