fixup! Implement widgets command

Author: pavelkraleu

src/textual_dev/previews/widgets.py

@@ -36,7 +36,7 @@
 WIDGETS = {
     "Button": button_example,
     "Checkbox": checkbox_example,
-    # "ContentSwitcher": content_switcher_example,
+    "ContentSwitcher": content_switcher_example,
     "DataTable": data_table_example,
     "DirectoryTree": directory_tree_example,
     "Footer": footer_example,
@@ -51,17 +51,17 @@
     "OptionList": option_list_example,
     "Placeholder": placeholder_example,
     "Pretty": pretty_example,
-    # "ProgressBar": progress_bar_example,
+    "ProgressBar": progress_bar_example,
     "RadioButton": radio_button_example,
     "RadioSet": radio_set_example,
     "Select": select_example,
     "SelectionList": selection_list_example,
     "Sparkline": sparkline_example,
     "Static": static_example,
     "Switch": switch_example,
-    # "TabbedContent": tabbed_content_example,
-    # "Tabs": tabs_example,
-    # "TextLog": text_log_example,
+    "TabbedContent": tabbed_content_example,
+    "Tabs": tabs_example,
+    "TextLog": text_log_example,
     "Tree": tree_example,
 }