The QuantizersSwitcher fails to achieve the expected goal.

[666zz666]

The QuantizersSwitcher has a bug, where in the following situation, calling enable_quantizers() only once does not achieve the expected goal; it must be called twice:
- When the quantizers are all set to disable, calling disable_quantizers() again.

nncf/nncf/torch/quantization/layers.py

Line 637 in 10fb27c

class QuantizersSwitcher: