chore(type): make pool.type optional (#575)

Author: 9aoy

packages/core/src/types/config.ts

@@ -10,7 +10,7 @@ export type RstestPoolType = 'forks';
 
 export type RstestPoolOptions = {
   /** Pool used to run tests in. */
-  type: RstestPoolType;
+  type?: RstestPoolType;
   /** Maximum number or percentage of workers to run tests in. */
   maxWorkers?: number | string;
   /** Minimum number or percentage of workers to run tests in. */

website/docs/en/config/test/pool.mdx

@@ -9,7 +9,7 @@ overviewHeaders: []
 ```ts
 export type RstestPoolOptions = {
   /** Pool used to run tests in. */
-  type: 'fork';
+  type?: 'fork';
   /** Maximum number or percentage of workers to run tests in. */
   maxWorkers?: number | string;
   /** Minimum number or percentage of workers to run tests in. */

website/docs/zh/config/test/pool.mdx

@@ -9,7 +9,7 @@ overviewHeaders: []
 ```ts
 export type RstestPoolOptions = {
   /** 用于运行测试的线程池 */
-  type: 'fork';
+  type?: 'fork';
   /** 最大运行的线程池的数量或百分比 */
   maxWorkers?: number | string;
   /** 最小运行的线程池的数量或百分比 */