opt back in to hmac secret extension because it's disabled now

[glyph]

Touch your authenticator to open the vault at ~/Secrets/pypi.tokenring
Traceback (most recent call last):
  File "/Users/glyph/.virtualenvs/TokenRing/bin/tokenring", line 8, in <module>
    sys.exit(cli())
             ^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/.virtualenvs/TokenRing/lib/python3.11/site-packages/pyuac/main_decorator.py", line 71, in main_requires_admin
    return run_function(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/cli.py", line 67, in agent
    vault = local_ring.realize_vault()
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/local.py", line 35, in realize_vault
    self.vault = Vault.load(self.location)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/vault.py", line 114, in load
    return cls.deserialize(interaction, client, contents, where)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/vault.py", line 64, in deserialize
    vault_handle.remember_key()
  File "/Users/glyph/Projects/TokenRing/src/tokenring/handles.py", line 164, in remember_key
    self._saved_key = self.key_as_bytes()
                      ^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/handles.py", line 173, in key_as_bytes
    return self.credential.key_from_salt(self.salt)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/TokenRing/src/tokenring/handles.py", line 108, in key_from_salt
    output1 = assertion_result.extension_results["hmacGetSecret"]["output1"]
              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/Users/glyph/Projects/python-fido2/fido2/webauthn.py", line 673, in __getitem__
    value = self._members[key]
            ~~~~~~~~~~~~~^^^^^
KeyError: 'hmacGetSecret'