Low Pass Filter broken unable to get valid Window config.

[Renlor]

What happened?

The Low Pass Filters generates a Param error on the Window config regardless of which window type is selected.

Param - Window(win):
	Value "window.WIN_HAMMING" cannot be evaluated:
	name 'window' is not defined

This appears to be related to #6526 which notes that #6523 was the breaking change, as far as I can tell this change had nothing to do with the error although the change was reverted in #6527 seemingly as a result of the complaint about LPF not working.

System Information

OS: Mac 14.5 arm64 GR Installation Method: Anaconda Using an RTLSDR, but not necessary to reproduce the problem.

GNU Radio Version

4.0-git (dev-4.0)

Specific Version

3.10.5.1, 3.10.11.0

Steps to Reproduce the Problem

1. Ensure anaconda is installed and up to date
2. Create environment.yml file in an empty directory (e.g. radio-test).

---
name: radio-test
dependencies:
- conda-forge::gnuradio-core=3.10.5.1
- conda-forge::gnuradio-grc
- conda-forge::gnuradio-iio
- conda-forge::gnuradio-qtgui
- conda-forge::gnuradio-soapy
- conda-forge::gnuradio-uhd
- conda-forge::gnuradio-video-sdl
- conda-forge::gnuradio-zeromq
- conda-forge::rtl-sdr
- conda-forge::gnuradio-osmosdr

3. setup the environment and start gnuradio

cd radio-test
conda env create
conda env activate radio-test
gnuradio-companion

5. Add a Low Pass Filter or FFT Low Pass Filter to the graph
6. Open the Low Pass Filter config, on the General tab note that the errors on the Low Pass Filter always contain a Param error as follows regardless of which Window is selected.

Param - Window(win):
	Value "window.WIN_BLACKMAN" cannot be evaluated:
	name 'window' is not defined