[vue-component-meta] re-check same components with update

[Tahul]

Follow up of: nuxtlabs/nuxt-component-meta#43

Currently, when using vue-component-meta checkers, once the checker has been initialized, any request to a component metas will return the data for the component at the state it was when the checker has been created.

Including the fact that the checker can take a pretty long time to be initialized, that makes vue-component-meta impossible to add in a toolchain with HMR.

I'm not sure if this is a limitation of embedding a TS language server, what I would imagine is that any request to a file path metas would return the metas for the actual content of the file, and not a cached one.