Revert TuyaClusterData attr_value to int type only

[prairiesnpr]

Proposed change

Fixes: #3520

Additional information

This should allow any valid zigpy type, but we should revert for now and address in a later PR.

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works

[TheJulianJES]

Thanks!