Do not trigger an analysis when definition preview is opened

When hitting Ctrl+Hover over a symbol, a little popup is displayed to show the 'symbol definition preview'. This is treated as a document opening as it triggers the textDocument/didOpen call, which in our language server triggers an analysis. This is by design as explained in this issue.

It does not make sense to trigger an analysis for this preview, so we should find a way to prevent it (there are some suggested workarounds at the end of the linked issue).