Disable HEIC image preview provider for performance concerns

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

config/config.sample.php

@@ -1058,6 +1058,7 @@ $CONFIG = [
  * concerns:
  *
  *  - OC\Preview\Illustrator
+ *  - OC\Preview\HEIC
  *  - OC\Preview\Movie
  *  - OC\Preview\MSOffice2003
  *  - OC\Preview\MSOffice2007
@@ -1075,7 +1076,6 @@ $CONFIG = [
  *
  *  - OC\Preview\BMP
  *  - OC\Preview\GIF
- *  - OC\Preview\HEIC
  *  - OC\Preview\JPEG
  *  - OC\Preview\MarkDown
  *  - OC\Preview\MP3
@@ -1089,7 +1089,6 @@ $CONFIG = [
 	'OC\Preview\PNG',
 	'OC\Preview\JPEG',
 	'OC\Preview\GIF',
-	'OC\Preview\HEIC',
 	'OC\Preview\BMP',
 	'OC\Preview\XBitmap',
 	'OC\Preview\MP3',

lib/private/PreviewManager.php

@@ -278,7 +278,6 @@ class PreviewManager implements IPreview {
 	 *  - OC\Preview\JPEG
 	 *  - OC\Preview\GIF
 	 *  - OC\Preview\BMP
-	 *  - OC\Preview\HEIC
 	 *  - OC\Preview\XBitmap
 	 *  - OC\Preview\MarkDown
 	 *  - OC\Preview\MP3
@@ -286,6 +285,7 @@ class PreviewManager implements IPreview {
 	 *
 	 * The following providers are disabled by default due to performance or privacy concerns:
 	 *  - OC\Preview\Font
+	 *  - OC\Preview\HEIC
 	 *  - OC\Preview\Illustrator
 	 *  - OC\Preview\Movie
 	 *  - OC\Preview\MSOfficeDoc
@@ -311,7 +311,6 @@ class PreviewManager implements IPreview {
 			Preview\JPEG::class,
 			Preview\GIF::class,
 			Preview\BMP::class,
-			Preview\HEIC::class,
 			Preview\XBitmap::class,
 			Preview\Krita::class,
 			Preview\WebP::class,