Re-add the "send more files" option to file drop

src/components/Chat.vue

@@ -35,6 +35,7 @@
       v-on:add-files="(files) => addAttachments(files)"
       :batch="uploadBatch"
       v-on:close="closeFileMode"
+      v-on:reset="resetFileMode"
       :fileModeMode="true"
       :defaultRootMessageText="$t('file_mode.files')"
     />
@@ -1975,6 +1976,10 @@ export default {
       }
     },
 
+    resetFileMode() {
+      this.uploadBatch = this.$matrix.attachmentManager.createUpload(this.room);
+    },
+
     closeFileMode() {
       this.uploadBatch?.cancel();
       this.uploadBatch = undefined;