Fix - LoadedPrograms statistics

[Lichtso]

Problem

Through multiple reworks of the loaded programs cache its statistics have become meaningless nonsense.

Summary of Changes

• Fixes hits, misses
• Adds reloads, lost_insertions
• Removes prunes_expired

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (b3ea62f) 81.6% compared to head (55160b3) 81.6%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #35026     +/-   ##
=========================================
- Coverage    81.6%    81.6%   -0.1%     
=========================================
  Files         830      830             
  Lines      224828   224837      +9     
=========================================
- Hits       183521   183509     -12     
- Misses      41307    41328     +21     

[mergify]

Backports to the stable branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule.

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.

[ryoqun]

ref: #35191