Toggle hint is inserted into code blocks when clicking inside them

[janssenhenning]

Describe the bug

context
When a code-block is nested inside a toggle region and one clicks inside this block the toggle hint, i.e. Click to show or Click to hide is inserted into the beginning of the block

These two screenshots are form the sphinx-togglebutton read the docs page
Before clicking into the code block

And after

Reproduce the bug

1. Go to https://sphinx-togglebutton.readthedocs.io/en/latest/ for example
2. Click the first toggle button
3. Click inside the revealed code block

List your environment

No response

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[choldgraf]

closed by #45