Compass rose fix (#6318)

* won't mount if cameraAngleOfView undefined

* fix non-gimbling camera azimuth

correct pan to azimuth

* reorganize shared props passing

* enable hud for non-gimbling cameras

* fix unit tests

* rotate function needs to work with numbers

* avoid -0

* fix: don't delete imagery size, update related telemetry on focusedImage change

* refactor: remove unused prop

* fix: ensure thumbnail key is unique

* fix: watch `focusedImage`, not `focusedImageIndex`

- Corrects a false assumption that if the `focusedImageIndex` changes, the `focusedImage` has changed. This was causing us to mistakenly reset a lot of display props that control whether or not the Compass shows.

- For example, if an image falls out of bounds, the `focusedImageIndex` will change as the old image is removed from the array.

---------

Co-authored-by: Jesse Mazzella <jesse.d.mazzella@nasa.gov>
Co-authored-by: Jesse Mazzella <ozyx@users.noreply.github.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>

example/imagery/plugin.js

@@ -275,7 +275,7 @@ function pointForTimestamp(timestamp, name, imageSamples, delay) {
         local: Math.floor(timestamp / delay) * delay,
         url,
         sunOrientation: getCompassValues(0, 360),
-        cameraPan: getCompassValues(0, 360),
+        cameraAzimuth: getCompassValues(0, 360),
         heading: getCompassValues(0, 360),
         transformations: navCamTransformations,
         imageDownloadName