refactor(测试计划): 调整测试规划脑图获取接口权限

backend/services/test-plan/src/main/java/io/metersphere/plan/controller/TestPlanCollectionMinderController.java

@@ -25,7 +25,7 @@ public class TestPlanCollectionMinderController {
 
     @GetMapping("/data/{planId}")
     @Operation(summary = "测试规划脑图列表")
-    @RequiresPermissions(PermissionConstants.TEST_PLAN_READ_UPDATE)
+    @RequiresPermissions(PermissionConstants.TEST_PLAN_READ)
     @CheckOwner(resourceId = "#planId", resourceType = "test_plan")
     public List<TestPlanCollectionMinderTreeDTO> getMindTestPlanCase(@PathVariable String planId) {
         return testPlanCollectionMinderService.getMindTestPlanCase(planId);