[projmgr] Handle project-context load exclusively for generated elf type

[grasci-arm]

Address #2139

[github-actions]

Test Results

    3 files     21 suites   14m 8s ⏱️
  418 tests   418 ✅ 0 💤 0 ❌
1 254 runs  1 254 ✅ 0 💤 0 ❌

Results for commit 1ff16c3.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.59%. Comparing base (f47f81a) to head (1ff16c3).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2171   +/-   ##
=======================================
  Coverage   66.59%   66.59%           
=======================================
  Files         181      181           
  Lines       38385    38384    -1     
  Branches    22493    22492    -1     
=======================================
  Hits        25563    25563           
  Misses       8079     8079           
+ Partials     4743     4742    -1     

Flag	Coverage Δ
projmgr-cov	80.79% <100.00%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
tools/projmgr/include/ProjMgrWorker.h	64.28% <ø> (ø)
tools/projmgr/src/ProjMgrRunDebug.cpp	86.88% <100.00%> (-0.04%)	⬇️
tools/projmgr/src/ProjMgrWorker.cpp	87.81% <100.00%> (+0.02%)	⬆️

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