Cache Apigee entity ids in memory during one page load

[kedarkhaire]

Fixes #1147 for 3.x

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.23%. Comparing base (2bcf209) to head (f1335dc).

Additional details and impacted files

@@            Coverage Diff            @@
##                3.x    #1193   +/-   ##
=========================================
  Coverage     44.23%   44.23%           
  Complexity     3055     3055           
=========================================
  Files           343      343           
  Lines         11180    11180           
=========================================
  Hits           4945     4945           
  Misses         6235     6235           

Files with missing lines	Coverage Δ
src/Entity/Storage/EdgeEntityStorageBase.php	91.36% <ø> (ø)

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