Software Version Info
```plaintext
Python 3.12.7
Panel 1.5.3
```
Description of expected behavior and the observed behavior
value_throttled of various widgets is a read-only attribute and it is not possible to hook it up via pn.state.location.sync. I would expect an exception to be raised if the user attempts to do so anyways.
ALL software version info
Software Version Info
```plaintext Python 3.12.7 Panel 1.5.3 ```Description of expected behavior and the observed behavior
value_throttled
of various widgets is a read-only attribute and it is not possible to hook it up viapn.state.location.sync
. I would expect an exception to be raised if the user attempts to do so anyways.(Please don't confuse this issue with https://github.com/holoviz/panel/issues/7482 which features a similar code snippet)
Complete, minimal, self-contained example code that reproduces the issue
Stack traceback and/or browser JavaScript console output
Screenshots or screencasts of the bug in action