fix(lsp): announce typeHierarchy and executeCommand capabilities #41762

Problem:
Type hierarchy (#28388, #28467) and `workspace/executeCommand` (#11607) are
implemented, but `textDocument.typeHierarchy` and `workspace.executeCommand`
are missing from `make_client_capabilities()`.

Solution:
Declare both capabilities.

AI-assisted

runtime/lua/vim/lsp/protocol.lua

@@ -583,6 +583,9 @@ function protocol.make_client_capabilities()
       callHierarchy = {
         dynamicRegistration = false,
       },
+      typeHierarchy = {
+        dynamicRegistration = false,
+      },
       colorProvider = {
         dynamicRegistration = true,
       },
@@ -607,6 +610,9 @@ function protocol.make_client_capabilities()
       didChangeConfiguration = {
         dynamicRegistration = false,
       },
+      executeCommand = {
+        dynamicRegistration = false,
+      },
       workspaceFolders = true,
       applyEdit = true,
       workspaceEdit = {