[clangd] Doesn't re-parse affected files after rename

Clang enabled and it already finished parsing files.

Find References works for a member variable: finds it in different files. Only one header file is opened currently. 

Rename member variable, it renames all corretly. 

When Find References called second time after renaming - it finds only one result in current file. It doesn't find other places, because clangd didn't update data for other affected files