Add multiline-comment-style lint rule and fix violations

Enable multiline-comment-style with starred-block to require JSDoc-style
block comments with content on separate lines from the opening delimiter.
Auto-fix existing violations across the codebase.

Fixes #5899

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>

test/playwright/TestUtils.ts

@@ -459,8 +459,10 @@ export async function openTerminal(
     } catch {}
   }
   `);
-  // HACK: Tests may have side effects that could cause the terminal not to be removed. This
-  //       assertion catches this case early.
+  /*
+   * HACK: Tests may have side effects that could cause the terminal not to be removed. This
+   *       assertion catches this case early.
+   */
   strictEqual(await ctx.page.evaluate(`document.querySelector('#terminal-container').children.length`), 0, 'there must be no terminals on the page');
 
   let script = `
@@ -501,8 +503,10 @@ export async function openTerminal(
 
   await ctx.page.evaluate(script);
 
-  // HACK: This is a soft layer breaker that's temporarily included until unicode graphemes have
-  // more complete integration tests. See https://github.com/xtermjs/xterm.js/pull/4519#discussion_r1285234453
+  /*
+   * HACK: This is a soft layer breaker that's temporarily included until unicode graphemes have
+   * more complete integration tests. See https://github.com/xtermjs/xterm.js/pull/4519#discussion_r1285234453
+   */
   if (testOptions.loadUnicodeGraphemesAddon) {
     await ctx.page.evaluate(`
       window.unicode = new UnicodeGraphemesAddon();