fix(pagenumber): fix pagenumber result error

[arnaud-thorel-of]

Page result failure on totalPages calculation

PostgrestClient only know resultData and RangeInformation (Offset-Limit/Count) -> Example : (0-9/995)
Before :
Calculate total pages on 995 / ((9-0)+1) => 100 pages (99 pages of 10 elements + 1 page of 5 element)
But fail on last page because range result is 990-995/995 => will calculate totalPages on 995 / 5 items

Now :
Calculation is based on PageRequest items and not only on the result

[codecov]

Codecov Report

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

Comparison is base (d3e0f47) 97.66% compared to head (4fb97d9) 98.46%.
Report is 3 commits behind head on main.

Files	Patch %	Lines
...france/querydsl/postgrest/PostgrestRepository.java	93.10%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #16      +/-   ##
============================================
+ Coverage     97.66%   98.46%   +0.79%     
- Complexity      202      208       +6     
============================================
  Files            39       40       +1     
  Lines           385      390       +5     
  Branches         20       17       -3     
============================================
+ Hits            376      384       +8     
+ Partials          9        6       -3     

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