syntax in g:vim_vue_plugin_config replaced the whole default, so
{'syntax': {'script': ['javascript', 'typescript']}} removed template
and style, which then had no highlight or indent. Replace the default
of each key separately, like vim-svelte-plugin. A block can be removed
by setting it to [].
The v-bind() region in style contains cssValue.* groups, which don't
exist without css syntax, like when syntax in the config has only
script. Opening a file then showed E409 and E475. Add the style
highlights only if css syntax is loaded.