fix: tile renderer recovering the wrong camera position on globe (#8187)

* fix(globe): coveringTiles recovering the wrong camera position on the globe projection

* fix: update changelog format and spelling

* docs: shorten comments based on feedback

* fix: place the camera above the ground when computing its mercator coordinate

* test: move the camera mercator coordinate tests to mercator_utils

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Co-authored-by: Harel M <harel.mazor@gmail.com>