fix: Don't set default rootDir at time of import.

We need to lazily default rootDir to the current working directory
so that the current working directory can be set by code that runs after
boot up.

Author: chriseppstein

packages/@css-blocks/core/src/configuration/resolver.ts

@@ -28,7 +28,7 @@ const SIMPLE_KEYS: Array<ConfigurationSimpleKeys> = [
 const DEFAULTS: ResolvedConfiguration = {
   outputMode: OutputMode.BEM,
   importer: defaultImporter,
-  rootDir: process.cwd(),
+  rootDir: "",
   importerData: {},
   preprocessors: {},
   disablePreprocessChaining: false,
@@ -43,6 +43,7 @@ class Resolver implements ResolvedConfiguration {
 
   constructor(options?: Options, defaults?: Options) {
     this._opts = { ...DEFAULTS };
+    this.setAll({rootDir: process.cwd()});
     this.setAll(defaults);
     this.setAll(options);
   }