fixup: prevent errors if lsp clients are not yet ready

lua/go/codelens.lua

@@ -4,6 +4,10 @@ local codelens = require('vim.lsp.codelens')
 
 -- runs callback if gopls supports codelens
 local function with_gopls_codelens(callback)
+  -- prevent errors from codelens if lsp is not ready
+  if not vim.lsp.buf.server_ready() then
+    return
+  end
   for _, gopls in pairs(vim.lsp.get_active_clients({ name = 'gopls', bufnr = 0 })) do
     if gopls:supports_method('textDocument/codeLens') then
       callback()