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/notes/obsidian/config.nix

@@ -22,7 +22,7 @@ in {
         "<leader>o" = "+Notes";
       };
 
-      luaConfigRC.obsidian = entryAnywhere ''
+      pluginRC.obsidian = entryAnywhere ''
         require("obsidian").setup(${toLuaObject cfg.setupOpts})
       '';
     };