treewide: migrate to pluginRC for correct DAG order

The "new" DAG order is as follows:
- (luaConfigPre)
- globalsScript
- basic
- theme
- pluginConfigs
- extraPluginConfigs
- mappings
- (luaConfigPost)

modules/plugins/visuals/fidget/config.nix

@@ -12,7 +12,7 @@ in {
   config = mkIf cfg.enable {
     vim.startPlugins = ["fidget-nvim"];
 
-    vim.luaConfigRC.fidget-nvim = entryAnywhere ''
+    vim.pluginRC.fidget-nvim = entryAnywhere ''
       require'fidget'.setup(${toLuaObject cfg.setupOpts})
     '';
   };