fix: Removes gestureHandling option from several 3D samples.

[willum070]

Following Haylee's lead on b/519335379, this PR removes the gestureHandling option from all samples that were using it. The reasoning here is ironclad. While COOPERATIVE gesture handling is a great default for 2D maps embedded inside a scrollable article or web page, it creates a highly problematic user experience in 3D maps, especially in full-page demos like our samples. This is due to the following reasons:

• In a 3D environment, users need to perform more complex navigation than in 2D (panning, tilting, rotating, and zooming). When COOPERATIVE mode is enabled, a two-fingered gesture is required to move the map; this causes a conflict since a two-fingered drag is also used to tilt and rotate.
• Desktop users are forced to hold CTRL or CMD while using the scroll wheel.
• Preventing the so-called "scroll trap" is not an issue with 3D maps, since the map is always styled to take up 100% of the viewport. Boom.