Fix click boxes for Pokéstop SVG icons

Clickboxes for Pokéstop icons are too big, especially the width.
This makesoverlapping issues much worse.
Decrease the clickbox size to correlate with visible graphics.

Start by locating the Pokéstop SVG icon rendering and clickbox code, then compare the hit area with the visible graphic, paying particular attention to its width. Done means the clickbox closely follows the visible Pokéstop icon and overlapping interactions are reduced without breaking icon clicks.

Written by the indexing model from the issue text.