Broken javascript indentation inside <script> tags in html

[sheerun]

Issue moved from sheerun/vim-polyglot#643

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Describe the bug:

Script tag indentation is broken.

To Reproduce:

I'm using neovim v0.4.4.

[tomprats]

For anyone else running into this issue that doesn't use vim-polygot (I think upgrading that should solve it).

I just needed to add an html indentation plugin - othree/html5.vim