[BUGFIX] Use Set() instead of custom array unique implementation

JavaScript has a native Set() object that ensures uniqueness of values
by design and is therefore faster than any custom uniqueness
implementation.

The Install Tool had an obvious implementation that is superseded by
`Set()`, being several milliseconds faster, depending on the client's
CPU.

Resolves: #99987
Releases: main, 11.5
Change-Id: I6b566b97c70b241070b78b841350a6b21b64a5a6
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77901
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Oliver Bartsch <bo@cedev.de>

Build/Sources/TypeScript/install/Resources/Public/TypeScript/Module/Upgrade/ExtensionScanner.ts

@@ -163,7 +163,7 @@ class ExtensionScanner extends AbstractInteractableModule {
         install: {
           action: 'extensionScannerMarkFullyScannedRestFiles',
           token: this.getModuleContent().data('extension-scanner-mark-fully-scanned-rest-files-token'),
-          hashes: this.uniqueArray(this.listOfAffectedRestFileHashes),
+          hashes: Array.from(new Set(this.listOfAffectedRestFileHashes)),
         },
       }).then(
         async (response: AjaxResponse): Promise<any> => {
@@ -179,15 +179,6 @@ class ExtensionScanner extends AbstractInteractableModule {
     }
   }
 
-  /**
-   * Helper method removing duplicate entries from an array
-   */
-  private uniqueArray(anArray: Array<any>): Array<any> {
-    return anArray.filter((value: any, index: number, self: any): boolean => {
-      return self.indexOf(value) === index;
-    });
-  }
-
   /**
    * Handle a single extension scan
    */