Text widgets do not respect on-demand execution

[asemptote]

Description

Clicking away from a text-based widget in an interact_manual function triggers an execute event without the button being clicked.

This also occurs if one tabs away from it (or shift-tabs, etc.)

Reproduce

import ipywidgets as widgets

@widgets.interact_manual(x='y')
def f(x):
    return x

Context

• Clean environment with ipywidgets version 8.1.7
• Windows 11
• VSCode Jupyter extension

[asemptote]

I have been getting around it with the following snippet:

# Fix the continuous update issue for Text widgets
interactive_widget = f.widget
for widget in interactive_widget.kwargs_widgets:
    if isinstance(widget, widgets.Text):
        widget.unobserve(interactive_widget.update, names="value")

[asemptote]

Just for reference, the code causing this behaviour is in interaction.py:

        # Wire up the widgets
        # If we are doing manual running, the callback is only triggered by the button
        # Otherwise, it is triggered for every trait change received
        # On-demand running also suppresses running the function with the initial parameters
        if self.manual:
            self.manual_button.on_click(self.update)

            # Also register input handlers on text areas, so the user can hit return to
            # invoke execution.
            for w in self.kwargs_widgets:
                if isinstance(w, Text):
                    w.continuous_update = False
                    w.observe(self.update, names='value')
        else:
            for widget in self.kwargs_widgets:
                widget.observe(self.update, names='value')
            self.update()

The for loop in the manual case should be revised to invoke execution only when Return is entered.