[Inductor] fix issue: redeclaration of float g_tmp_buffer_xxx (#90270)
This pr is to fix the issue: redeclaration of 'float g_tmp_buffer_in_ptr1[16] = {0};'
If a bool or uint8 tensor is used by multiple op, this tensor will be loaded multiple times. On load, it writes the declaration of this variable, i.e., `self.loads.writeline(f"float {g_tmp_buf}[{nelements}] = {{0}};")`, which will introduce redeclaration error.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/90270
Approved by: https://github.com/EikanWang, https://github.com/jgong5, https://github.com/desertfire, https://github.com/jansel
