Coin/FTRL/Pistol are not available via vw.get_config()

[ataymano]

Describe the bug

Reductions from ftrl.cc are not available from vw.get_config() call.

How to reproduce

import vowpalwabbit

vw = vowpalwabbit.Workspace(arg_str="", quiet=True)
print(f'Config keys for gd: {list(vw.get_config().keys())}')

vw = vowpalwabbit.Workspace(arg_str="--coin", quiet=True)
print(f'Config keys for --coin: {list(vw.get_config().keys())}')

Output:

Config keys for gd: ['count_label', 'gd', 'general']
Config keys for --coin: ['count_label', 'general']

Version

9.8

OS

Any

Language

Python

Additional context

No response

[RohanHBTU]

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