fix(lsp): codelens text flickers #38782

Problem:
When a new textDocument/codeLens response arrives with unresolved lenses,
on_win clears the existing codelens row before codeLens/resolve
completes. This causes the displayed codelens text to flicker while
typing.

Solution:
Keep the current virtual lines if any of the refreshed lenses are still
unresolved. Clear the old virtual lines only when the line no longer has
lenses or all its lenses are resolved.

A trade-off is that the user may temporarily see outdated codelenses.
However, that's preferable to spamming updates on every refresh.

AI-assisted: Codex

0 files changed, 0 insertions, 0 deletions