chore: return pagination fields in page objects in /programNotificationInstances TECH-1683

[teleivo]

• Similar to feat: add paging query param in tracker exporter favor of skipPaging TECH-1678 #16196 we are deprecating the skipPaging query parameter in favor of paging used in most endpoints.
• Similar to feat: return pagination fields in page objects in tracker exporter TECH-1679 #16164 we are deprecating the flat pagination related fields in favor of the pager used in most endpoints.
• return elements in programNotificationInstances instead of instances key to align with most other endpoints
• set user-facing page default to 1. The javax.persistence API we use in the store is zero based but this should not be leaked to the user.

We will align the controller and its request parameters with tracker exporters at a later stage. Right now we have to duplicate some of the validation logic we have in the RequestParamsValidator.

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (4f26fd4) 66.56% compared to head (79f445a) 66.55%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #16245      +/-   ##
============================================
- Coverage     66.56%   66.55%   -0.01%     
- Complexity    31651    31656       +5     
============================================
  Files          3517     3517              
  Lines        130972   130979       +7     
  Branches      15297    15297              
============================================
- Hits          87180    87175       -5     
- Misses        36664    36678      +14     
+ Partials       7128     7126       -2     

Flag	Coverage Δ
integration	50.21% <14.28%> (-0.01%)	⬇️
integration-h2	32.59% <95.23%> (-0.01%)	⬇️
unit	30.38% <0.00%> (-0.01%)	⬇️

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Files	Coverage Δ
...ion/HibernateProgramNotificationInstanceStore.java	90.32% <100.00%> (+5.94%)	⬆️
...r/event/ProgramNotificationInstanceController.java	97.29% <94.44%> (+0.74%)	⬆️

... and 2 files with indirect coverage changes

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