docs(changelog): add the infrastructure ground-sampling entry

Co-Authored-By: Claude Opus 5.5 <[email protected]>

changelog.d/1464-infrastructure-ground-sample-in-view.md

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+- Ground-sample Data Centers and Dams markers only when the camera sees their
+  base. An off-screen base read through the Earth and retried every 2 s, which
+  held the page near 2 s a frame over Ashburn, Virginia on the Esri map
+  (quanticsoul4772, #1464).