fix(lsp): resolve keymap capabilities over all buffer clients

lua/lazyvim/plugins/lsp/keymaps.lua

@@ -66,6 +66,17 @@ function M.get()
 end
 
 function M.on_attach(client, buffer)
+---@param method string
+function M.has(buffer, method)
+  method = method:find("/") and method or "textDocument/" .. method
+  local clients = vim.lsp.get_active_clients({ bufnr = buffer })
+  for _, client in ipairs(clients) do
+    if client.supports_method(method) then
+      return true
+    end
+  end
+  return false
+end
   local Keys = require("lazy.core.handler.keys")
   local keymaps = {} ---@type table<string,LazyKeys|{has?:string}>