[Chapel Merge] Fix these two tests after the Math module split

Branch: refs/heads/main
Revision: 567a176
Author: lydia-duncan
Link: Fix these two tests after the Math module split by lydia-duncan · Pull Request #19868 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #19868 from lydia-duncan/fixGasnetTests

Fix these two tests after the Math module split
[simple bug fix, not reviewed]

Now that Math is not included by default and these tests rely on symbols in it,
they need an explicit use of the module to continue to function

Passed a fresh checkout

Modified Files:
M test/optimizations/bulkcomm/asenjo/redistBlockToCyclic/FFT_assignment.chpl

M test/optimizations/bulkcomm/asenjo/redistBlockToCyclic/FFT_bulk.chpl

Compare: https://github.com/chapel-lang/chapel/compare/2194350ff08a...567a17651997