chore: simplify "active filters" in CLI output (#14461)

Author: Connormiha

packages/jest-core/src/lib/activeFiltersMessage.ts

@@ -7,11 +7,9 @@
 
 import chalk = require('chalk');
 import type {Config} from '@jest/types';
+import {isNonNullable} from 'jest-util';
 
-const activeFilters = (
-  globalConfig: Config.GlobalConfig,
-  delimiter = '\n',
-): string => {
+const activeFilters = (globalConfig: Config.GlobalConfig): string => {
   const {testNamePattern, testPathPattern} = globalConfig;
   if (testNamePattern || testPathPattern) {
     const filters = [
@@ -22,12 +20,12 @@ const activeFilters = (
         ? chalk.dim('test name ') + chalk.yellow(`/${testNamePattern}/`)
         : null,
     ]
-      .filter(f => f)
+      .filter(isNonNullable)
       .join(', ');
 
-    const messages = [`\n${chalk.bold('Active Filters: ')}${filters}`];
+    const messages = `\n${chalk.bold('Active Filters: ')}${filters}`;
 
-    return messages.filter(message => !!message).join(delimiter);
+    return messages;
   }
 
   return '';