uintptr_t is usually a good idea when handling pointers, but lldb has to
handle 64-bit addresses that might be from a remote system, on a 32-bit
system.
So I've changed a few instances here to use addr_t which is 64-bit
everywhere.
Before we got:
https://lab.llvm.org/buildbot/#/builders/18/builds/21247
```
../llvm-project/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp:81:28: error: constexpr variable 'g_mte_tag_mask' must be initialized by a constant expression
81 | static constexpr uintptr_t g_mte_tag_mask = (uintptr_t)0x0f << g_mte_tag_shift;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../llvm-project/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp:81:61: note: shift count 56 >= width of type 'uintptr_t' (aka 'unsigned int') (32 bits)
81 | static constexpr uintptr_t g_mte_tag_mask = (uintptr_t)0x0f << g_mte_tag_shift;
| ^
1 error generated.
```
Original code added by #159117.
88b5c7435e