Files.app: Disable the import status column temporarily.

The import status column currently shows up everywhere, which is undesirable.  Disable it until this problem is fixed.

BUG=460135

Review URL: https://codereview.chromium.org/943693003

Cr-Commit-Position: refs/heads/master@{#317132}

ui/file_manager/file_manager/foreground/js/file_manager.js

@@ -737,7 +737,9 @@ FileManager.prototype = /** @struct */ {
     FileManagerDialogBase.setFileManager(this);
 
     var table = queryRequiredElement(dom, '.detail-table');
-    table.importEnabled = this.importEnabled_;
+    // TODO(kenobi): See crbug/460135.  The import status column in table view
+    // is disabled until it works properly.
+    table.importEnabled = false;
     FileTable.decorate(
         table,
         this.fileSystemMetadata_,