refactor(lsp): move repeated table construction into a variable

As suggested in neovim#28483 (comment)

runtime/lua/vim/lsp/handlers.lua

@@ -253,14 +253,15 @@ M[ms.textDocument_references] = function(_, result, ctx, config)
  local title = 'References'
  local items = util.locations_to_items(result, client.offset_encoding)
 
+ local list = { title = title, items = items, context = ctx };
  if config.loclist then
- vim.fn.setloclist(0, {}, ' ', { title = title, items = items, context = ctx })
+ vim.fn.setloclist(0, {}, ' ', list)
  api.nvim_command('lopen')
  elseif config.on_list then
  assert(vim.is_callable(config.on_list), 'on_list is not a function')
- config.on_list({ title = title, items = items, context = ctx })
+ config.on_list(list)
  else
- vim.fn.setqflist({}, ' ', { title = title, items = items, context = ctx })
+ vim.fn.setqflist({}, ' ', list)
  api.nvim_command('botright copen')
  end
 end
@@ -286,14 +287,15 @@ local function response_to_list(map_result, entity, title_fn)
  local title = title_fn(ctx)
  local items = map_result(result, ctx.bufnr)
 
+ local list = { title = title, items = items, context = ctx }
  if config.loclist then
- vim.fn.setloclist(0, {}, ' ', { title = title, items = items, context = ctx })
+ vim.fn.setloclist(0, {}, ' ', list)
  api.nvim_command('lopen')
  elseif config.on_list then
  assert(vim.is_callable(config.on_list), 'on_list is not a function')
- config.on_list({ title = title, items = items, context = ctx })
+ config.on_list(list)
  else
- vim.fn.setqflist({}, ' ', { title = title, items = items, context = ctx })
+ vim.fn.setqflist({}, ' ', list)
  api.nvim_command('botright copen')
  end
  end