Fix case-opt WENOs on Frontier

[ChrisZYJ]

Description

Fixes #534, where assigning ones and zeros to logicals in the generated case-optimized F90 files causes case optimization to not work on Frontier.

It now generates this f90 code intead:

logical, parameter :: wenojs = (0 /= 0)
logical, parameter :: mapped_weno = (0 /= 0)
logical, parameter :: wenoz = (1 /= 0)
logical, parameter :: teno = (0 /= 0)

Type of change

• Bug fix (non-breaking change which fixes an issue)

Scope

• This PR comprises a set of related changes with a common goal

How Has This Been Tested?

• Passes WENO test suits
• Works with case-optimization & generates the expected f90 file

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.44%. Comparing base (b4dc8ad) to head (4f6e5df).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #535   +/-   ##
=======================================
  Coverage   58.44%   58.44%           
=======================================
  Files          57       57           
  Lines       14441    14441           
  Branches     1891     1891           
=======================================
  Hits         8440     8440           
  Misses       5440     5440           
  Partials      561      561           

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