Document that show_copy_button in gr.Textbox is not visible when show_label=False (#8012)

* Document that show_copy_button in gr.Textbox is not visible when show_label=False
Remove dict_to_dataclass since its not used

* add changeset

* tweak wording

---------

Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>

.changeset/upset-coins-remain.md

@@ -0,0 +1,5 @@
+---
+"gradio": patch
+---
+
+feat:Document that show_copy_button in gr.Textbox is not visible when show_label=False

gradio/components/textbox.py

@@ -63,7 +63,7 @@ class Textbox(FormComponent):
             label: The label for this component. Appears above the component and is also used as the header if there are a table of examples for this component. If None and used in a `gr.Interface`, the label will be the name of the parameter this component is assigned to.
             info: additional component description.
             every: If `value` is a callable, run the function 'every' number of seconds while the client connection is open. Has no effect otherwise. The event can be accessed (e.g. to cancel it) via this component's .load_event attribute.
-            show_label: if True, will display label.
+            show_label: if True, will display label. If False, the copy button is hidden as well as well as the label.
             container: If True, will place the component in a container - providing some extra padding around the border.
             scale: relative size compared to adjacent Components. For example if Components A and B are in a Row, and A has scale=2, and B has scale=1, A will be twice as wide as B. Should be an integer. scale applies in Rows, and to top-level Components in Blocks where fill_height=True.
             min_width: minimum pixel width, will wrap if not sufficient screen space to satisfy this value. If a certain scale value results in this Component being narrower than min_width, the min_width parameter will be respected first.

test/test_helpers.py

@@ -764,6 +764,7 @@ class TestProgressBar:
         ]
 
     @pytest.mark.asyncio
+    @pytest.mark.flaky
     async def test_progress_bar_track_tqdm_without_iterable(self):
         def greet(s, _=gr.Progress(track_tqdm=True)):
             with tqdm(total=len(s)) as progress_bar: