Use textDocument/codeLens data in the actions menu when applicable #2 (#26848)

Re-applies what's been reverted in
https://github.com/zed-industries/zed/pull/26832 with an action-related
fix in
https://github.com/zed-industries/zed/commit/64b5d37d324176cc7b819418f46724cd4c67393d

Before, actions were resolved only if `data` is present and either of
the possible fields is empty:

https://github.com/zed-industries/zed/blob/e842b4eade368127f01944f1b442016edd6b292d/crates/project/src/lsp_store.rs#L1632-L1633

But Zed resolves completions and inlays once, unconditionally, and the
reverted PR applied the same strategy to actions.
That did not work despite the spec not forbidding `data`-less actions to
be resolved.

Soon, it starts to work due to
https://github.com/rust-lang/rust-analyzer/pull/19369 but it seems safer
to restore the original filtering code.

Code lens have no issues with `data`-less resolves:

https://github.com/rust-lang/rust-analyzer/blob/220d913cbcd05f9b7635179a98c685f31821a572/crates/rust-analyzer/src/handlers/request.rs#L1618-L1620

so the same approach as completions and inlays is kept: resolve once.


Release Notes:

- N/A

crates/collab/src/rpc.rs

@@ -307,6 +307,7 @@ impl Server {
             .add_request_handler(forward_read_only_project_request::<proto::SynchronizeBuffers>)
             .add_request_handler(forward_read_only_project_request::<proto::InlayHints>)
             .add_request_handler(forward_read_only_project_request::<proto::ResolveInlayHint>)
+            .add_request_handler(forward_mutating_project_request::<proto::GetCodeLens>)
             .add_request_handler(forward_read_only_project_request::<proto::OpenBufferByPath>)
             .add_request_handler(forward_read_only_project_request::<proto::GitGetBranches>)
             .add_request_handler(forward_read_only_project_request::<proto::OpenUnstagedDiff>)
@@ -347,6 +348,7 @@ impl Server {
             .add_message_handler(create_buffer_for_peer)
             .add_request_handler(update_buffer)
             .add_message_handler(broadcast_project_message_from_host::<proto::RefreshInlayHints>)
+            .add_message_handler(broadcast_project_message_from_host::<proto::RefreshCodeLens>)
             .add_message_handler(broadcast_project_message_from_host::<proto::UpdateBufferFile>)
             .add_message_handler(broadcast_project_message_from_host::<proto::BufferReloaded>)
             .add_message_handler(broadcast_project_message_from_host::<proto::BufferSaved>)