fix the missing symbol issue in stencils with scalar arguments

[xyuan]

Description
fix the bugs in the scalar function argument in stencils, this bug caused by the unreachable code trimming due to the non-overlapped loop region. This fix releases the unreachable code trimming and keep the same IR to dace which has the same function signatures as in the function call tree when orchestration option is used.

this fix requires to work with GridTools/gt4py#1612.

How Has This Been Tested?
Please describe the tests that you ran to verify your changes. Please also note
any relevant details for your test configuration (e.g. compiler, OS). Include
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Checklist:

• [ y ] My code follows the style guidelines of this project
• [ y ] I have performed a self-review of my own code
• [ y] I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• [ y ] My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• New check tests, if applicable, are included
• Targeted model if this changed was triggered by a model need/shortcoming

[fmalatino]

Will review after PR 1612 in GT4Py

[oelbert]

Looks like if you run the linter it should work out, then I think it's good to go

[fmalatino]

I have been able to test these changes, along with the changes in PR 1612 in GT4Py, in a c384 16x16 layout baroclinic configuration.

[oelbert]

👍