tests/lsp: re-enable tests for nixd

This reverts commit 544fc5d.

Author: GaetanLepage

Diff for: tests/test-sources/example-configurations/issues.nix

@@ -33,8 +33,7 @@
             installCargo = true;
             installRustc = true;
           };
-          # TODO As of 2024-03-10, nixd is broken (see https://github.com/nix-community/nixd/issues/357)
-          nixd.enable = false;
+          nixd.enable = true;
         };
       };
     };
@@ -81,8 +80,7 @@
       lsp = {
         enable = true;
         servers = {
-          # TODO As of 2024-03-10, nixd is broken (see https://github.com/nix-community/nixd/issues/357)
-          nixd.enable = false;
+          nixd.enable = true;
           rust-analyzer = {
             enable = true;
             installCargo = true;

Diff for: tests/test-sources/plugins/lsp/_lsp.nix

@@ -125,8 +125,7 @@
           marksman.enable = true;
           metals.enable = true;
           nil_ls.enable = true;
-          # TODO As of 2024-03-10, nixd is broken (see https://github.com/nix-community/nixd/issues/357)
-          nixd.enable = false;
+          nixd.enable = true;
           nushell.enable = true;
           ocamllsp.enable = true;
           ols.enable =

Diff for: tests/test-sources/plugins/lsp/nixd.nix

@@ -4,8 +4,7 @@
       enable = true;
 
       servers.nixd = {
-        # TODO As of 2024-03-10, nixd is broken (see https://github.com/nix-community/nixd/issues/357)
-        enable = false;
+        enable = true;
 
         settings = {
           eval = {