Set capitalization type of on image text field editors

lib/controls/entry_media_attachments/media_uploads_control.dart

@@ -103,6 +103,7 @@ class _MediaUploadsControlState extends State<MediaUploadsControl> {
                 Expanded(
                   child: TextField(
                     controller: controller,
+                    textCapitalization: TextCapitalization.sentences,
                     onChanged: (value) {
                       widget.entryMediaItems.albumName = value;
                     },

lib/screens/image_editor_screen.dart

@@ -138,6 +138,7 @@ class _ImageEditorScreenState extends State<ImageEditorScreen> {
       TextField(
         controller: altTextController,
         maxLines: 10,
+        textCapitalization: TextCapitalization.sentences,
         decoration: InputDecoration(
           labelText: 'ALT Text',
           alignLabelWithHint: true,