Decrease number of memory reallocations

[rustam-gamidov-here]

Adds dedicated filtering for cases when only tile keys are required by the caller.

Relates-To: MINOR

[codecov]

Codecov Report

Attention: Patch coverage is 75.38462% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 81.51%. Comparing base (91d6934) to head (7f0fd65).
Report is 1 commits behind head on master.

❗ Current head 7f0fd65 differs from pull request most recent head 05e3e1c. Consider uploading reports for the commit 05e3e1c to get more accurate results

Files	Patch %	Lines
...-read/src/repositories/PrefetchTilesRepository.cpp	72.73%	9 Missing and 6 partials ⚠️
...-dataservice-read/src/VersionedLayerClientImpl.cpp	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1496      +/-   ##
==========================================
- Coverage   81.54%   81.51%   -0.03%     
==========================================
  Files         341      341              
  Lines       13376    13395      +19     
  Branches     1438     1445       +7     
==========================================
+ Hits        10907    10918      +11     
- Misses       1893     1900       +7     
- Partials      576      577       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.