amp-carousel 0.2 with `loop`, `type=carousel` and `layout=fixed-height` is cut off when contained in a large width

### Description

### Description

When amp-carousel 0.2 is used with the `loop`, `type=carousel` and `layout=fixed-height` attributes in a wide page, the slides are cut off, with blank space displayed on the right side of the carousel. Clicking on the left and right arrow keys does nothing.

/CC @caroqliu

### Reproduction Steps

This can be reproduced with the following AMP HTML:
```

amp-carousel






body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}

```

[Playground link](
https://playground.amp.dev/?format=websites&_gl=1*glz6dj*_ga*YW1wLVd5NUFON2hWN2tJZW8xam5zUzEtTUE.&mode=Responsive#share=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)

### Relevant Logs

_No response_

### Browser(s) Affected

_No response_

### OS(s) Affected

_No response_

### Device(s) Affected

_No response_

### AMP Version Affected

_No response_

Start with the provided AMP HTML reproduction and Playground link, focusing on amp-carousel 0.2 with loop, type="carousel", and layout="fixed-height" at a wide page width. The work is done when all slides are displayed without blank space and the left and right arrow controls navigate between them.

Written by the indexing model from the issue text.