bug: map.flyTo with explicit `duration: undefined` throws `TypeError`, subsequent calls to `map.getBounds()` throw many `Error: Invalid LatLng Object`

### mapbox-gl-js version v3.21.0 ### Browser and version tested in Chromium Version 145.0.7632.159 (Official Build) (64-bit), and Firefox 140.0 (64-bit) ### Expected behavior Calling `flyTo` with explicit `duration: undefined` should behave the same as omitting `duration` parameter. ### Actual behavior Calling `flyTo` with explicit `duration: undefined` causes total breakdown. ### Link to the demonstration https://output.jsbin.com/yopanudexe ### Steps to trigger the unexpected behavior this suffices: ``` map.flyTo({ center: [10, 10], zoom: 3, duration: undefined }); map.getBounds(); ``` ### Relevant log output ```shell Uncaught TypeError: can't access property 3 of null j vec3.js:500 fromInvProjectionMatrix primitives.ts:135 _calcMatrices transform.ts:2473 set zoom transform.ts:540 z camera.ts:1729 _renderFrameCallback camera.ts:1837 run task_queue.ts:51 _render map.ts:4510 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _update map.ts:4439 _requestRenderFrame map.ts:4451 _ease camera.ts:1829 flyTo camera.ts:1767 <anonymous> repro.html:29 fire evented.ts:151 _render map.ts:4598 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _render map.ts:4679 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _render map.ts:4679 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _render map.ts:4679 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 _render map.ts:4691 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _render map.ts:4679 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _render map.ts:4679 _frame map.ts:5003 frame browser.ts:39 _triggerFrame map.ts:4997 triggerRepaint map.ts:4991 _update map.ts:4439 Map map.ts:795 fire evented.ts:151 fire evented.ts:168 fire evented.ts:168 _tileLoaded source_cache.ts:319 c vector_tile_source.ts:411 processTask actor.ts:165 receive actor.ts:144 mapbox-gl.js:11:6883 Uncaught Error: Invalid LngLat object: (NaN, NaN) Ru lng_lat.ts:76 unproject mercator.ts:31 coordinateLocation transform.ts:1721 pointLocation3D transform.ts:1692 unproject map.ts:1575 Xa events.ts:152 mouseover map_event.ts:61 handleEvent handler_manager.ts:360 kl handler_manager.ts:192 Map map.ts:737 <anonymous> repro.html:25 lng_lat.ts:76:19 ```