fix(globe): a daylight sky and no daytime stars in the cinematic look

The atmosphere draws physical radiance scaled for an exposure near 10,
while the baked Google tiles need exposure 1, so the noon sky came out
dark navy with the stars showing through. The cinematic look now scales
the atmosphere's radiance-to-luminance factors (sky, aerial perspective,
clouds) by 3, leaving the tiles alone, and shows its stars only from
space or with the sun below -6 degrees at the camera. Gallery
regenerated.

scripts/package-boundaries.json

@@ -1760,6 +1760,7 @@
       "src/globe/cesium/render.js",
       "src/globe/cesium/surface.js",
       "src/globe/cesium/engineFromViewer.js",
+      "src/globe/navara/atmosphereLuminance.js",
       "src/globe/navara/cameraMath.js",
       "src/globe/navara/cameraModel.js",
       "src/globe/navara/createNavaraEngine.js",