[rtemodel, projmgr] Recreate constructed files unconditionally (#1147)

[spcaipers-arm]

Address #1894

From comment:

Without option --update-rte: when constructed files are missing, csolution recreates the files, but issues a warning indicated which file was recreated.
With option --update-rte: the constructed files are updated.

[github-actions]

Test Results

  7 files   53 suites   5m 8s ⏱️
185 tests 168 ✅ 17 💤 0 ❌
692 runs  624 ✅ 68 💤 0 ❌

Results for commit 3049afc.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Attention: Patch coverage is 53.33333% with 7 lines in your changes missing coverage. Please review.

Project coverage is 65.48%. Comparing base (d55a79e) to head (3049afc).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
tools/projmgr/test/src/ProjMgrUnitTests.cpp	44.44%	0 Missing and 5 partials ⚠️
tools/projmgr/src/ProjMgr.cpp	80.00%	0 Missing and 1 partial ⚠️
...ols/projmgr/test/src/ProjMgrGeneratorUnitTests.cpp	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1969   +/-   ##
=======================================
  Coverage   65.48%   65.48%           
=======================================
  Files         173      173           
  Lines       35148    35151    +3     
  Branches    20402    20405    +3     
=======================================
+ Hits        23015    23017    +2     
  Misses       7905     7905           
- Partials     4228     4229    +1     

Flag	Coverage Δ
buildmgr-cov	73.94% <ø> (ø)
packchk-cov	68.36% <ø> (ø)
projmgr-cov	81.84% <53.33%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
tools/projmgr/src/ProjMgr.cpp	81.91% <80.00%> (+0.02%)	⬆️
...ols/projmgr/test/src/ProjMgrGeneratorUnitTests.cpp	79.06% <0.00%> (ø)
tools/projmgr/test/src/ProjMgrUnitTests.cpp	80.85% <44.44%> (-0.02%)	⬇️