bug(web): PHP help displays badly when shift before default in .keyman-touch-layout file

### Describe the bug

Apparently, if the shift layer occurs before the default layer in the .keyman-touch-layout file, the PHP help file displays incorrectly.

This is based on keyboards issue 2197 (https://github.com/keymanapp/keyboards/issues/2197), where the fv_australian.keyman-touch-layout file (in commit https://github.com/keymanapp/keyboards/commit/e9b652900193204988e2188b37d740e56c1be792) has the shift layer before the default layer in the .keyman-touch-layout file and the PHP help file displays badly.

Keyboards PR 2200 (https://github.com/keymanapp/keyboards/pull/2200) puts the default layer before the shift layer in the .keyman-touch-layout file (in commit https://github.com/keymanapp/keyboards/commit/34d14fb4a7dd68c7163b0706882bcbabb07975aa) and the PHP help file displays correctly.

### Reproduce the bug

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### Expected behavior

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### Related issues

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### Keyman apps

- [ ] Keyman for Android
- [ ] Keyman for iPhone and iPad
- [ ] Keyman for Linux
- [ ] Keyman for macOS
- [ ] Keyman for Windows
- [ ] Keyman Developer
- [X] KeymanWeb
- [ ] Other - give details at bottom of form

### Keyman version

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### Operating system

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### Device

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### Target application

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### Keyboard name

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### Keyboard version

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### Additional context

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