Add `n_term_mort_types` to the `fates_maxElementsPerSite` calculation to resolve potential restart indexing issues

[glemieux]

Description:

The pull request is a quick fix to resolve #1182 (also duplicate #1188). A longer term fix for these issues would be to avoid providing these history terms during satellite phenology mode, when they are not needed as suggested by @ckoven.

Collaborators:

@rgknox

Expectation of Answer Changes:

This is not expected to change answers

Checklist

If this is your first time contributing, please read the CONTRIBUTING document.

All checklist items must be checked to enable merging this pull request:

Contributor

• [x] The in-code documentation has been updated with descriptive comments
• [x] The documentation has been assessed to determine if updates are necessary

Integrator

• [x] FATES PASS/FAIL regression tests were run
• [x] Evaluation of test results for answer changes was performed and results provided

Documentation

• Technical Note update:
• User's Guide update:

Test Results:

TBD

CTSM (or) E3SM (specify which) test hash-tag:

CTSM (or) E3SM (specify which) baseline hash-tag:

FATES baseline hash-tag:

Test Output:

[glemieux]

Regression testing on derecho is complete. All expectected tests pass b4b. The test previously failing exact restart, ERS_Ld30.f45_f45_mg37.I2000Clm51FatesSpCruRsGs.derecho_intel.clm-FatesColdSatPhen, is now passing.

Results: /glade/u/home/glemieux/scratch/ctsm-tests/tests_pr1189-fates