fix: move the default Phoenix settings from setup to opts

When the settings is defined with defaults in opts LazyVim
will automatically merge them with any additional opts.settings
that the user adds

lua/lazyvim/plugins/extras/lang/tailwind.lua

@@ -24,9 +24,20 @@ return {
           filetypes_include = {},
           -- to fully override the default_config, change the below
           -- filetypes = {}
+
           -- additional settings for the server, e.g:
           -- tailwindCSS = { includeLanguages = { someLang = "html" } }
-          settings = {},
+          -- can be addeded to the settings table and will be merged with
+          -- this defaults for Phoenix projects
+          settings = {
+            tailwindCSS = {
+              includeLanguages = {
+                elixir = "html-eex",
+                eelixir = "html-eex",
+                heex = "html-eex",
+              },
+            },
+          },
         },
       },
       setup = {
@@ -43,18 +54,6 @@ return {
             return not vim.tbl_contains(opts.filetypes_exclude or {}, ft)
           end, opts.filetypes)
 
-          -- Add additional settings from opts
-          opts.settings = vim.tbl_deep_extend("error", {
-            tailwindCSS = {
-              -- Additional settings for Phoenix projects
-              includeLanguages = {
-                elixir = "html-eex",
-                eelixir = "html-eex",
-                heex = "html-eex",
-              },
-            },
-          }, opts.settings or {})
-
           -- Add additional filetypes
           vim.list_extend(opts.filetypes, opts.filetypes_include or {})
         end,