debugger: disable only the lint rules required by current file state

PR-URL: #38529
Backport-PR-URL: #39446
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/inspector/inspect_repl.js

@@ -1,5 +1,6 @@
 // TODO(trott): enable ESLint
-/* eslint-disable */
+/* eslint-disable getter-return, no-restricted-syntax,
+    node-core/prefer-primordials */
 
 'use strict';
 const FS = require('fs');
@@ -353,10 +354,8 @@ function createRepl(inspector) {
 
     [util.inspect.custom](depth, { stylize }) {
       const { startTime, endTime } = this.data;
-      return stylize(
-        `[Profile ${endTime - startTime}${String.fromCharCode(956)}s]`,
-        'special'
-      );
+      const MU = String.fromChar(956);
+      return stylize(`[Profile ${endTime - startTime}${MU}s]`, 'special');
     }
 
     save(filename = 'node.cpuprofile') {