fix(cmp): properly set cmp group_index to fix issues with copilot and other sources (#1639)

lua/lazyvim/plugins/extras/coding/copilot.lua

@@ -70,7 +70,7 @@ return {
     },
     ---@param opts cmp.ConfigSchema
     opts = function(_, opts)
-      table.insert(opts.sources, 1, { name = "copilot", group_index = 2 })
+      table.insert(opts.sources, 1, { name = "copilot", group_index = 1 })
       opts.sorting = opts.sorting or require("cmp.config.default")().sorting
       table.insert(opts.sorting.comparators, 1, require("copilot_cmp.comparators").prioritize)
     end,