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/lsp/src/lsp.rs

@@ -632,6 +632,9 @@ impl LanguageServer {
                     diagnostic: Some(DiagnosticWorkspaceClientCapabilities {
                         refresh_support: None,
                     }),
+                    code_lens: Some(CodeLensWorkspaceClientCapabilities {
+                        refresh_support: Some(true),
+                    }),
                     workspace_edit: Some(WorkspaceEditClientCapabilities {
                         resource_operations: Some(vec![
                             ResourceOperationKind::Create,
@@ -763,6 +766,9 @@ impl LanguageServer {
                         did_save: Some(true),
                         ..TextDocumentSyncClientCapabilities::default()
                     }),
+                    code_lens: Some(CodeLensClientCapabilities {
+                        dynamic_registration: Some(false),
+                    }),
                     ..TextDocumentClientCapabilities::default()
                 }),
                 experimental: Some(json!({