Lack of Isolation Between HyperLogLog and String Types

[saz97]

Is this a regression?

Yes

Description

When a string key is set and subsequently accessed with the PFCOUNT command (which is meant for HyperLogLog), the system returns a count, indicating that the two data types are not isolated. This occurs because the type in the value format for both string and HyperLogLog is the same, as shown in the attached image.

The root of the problem is that the type field in the value format for both string and HyperLogLog is the same.
value format of String and Hyperloglog:
| type | value | reserve | cdate | timestamp |
| 1B | | 16B | 8B | 8B |

Please provide a link to a minimal reproduction of the bug

No response

Screenshots or videos

Please provide the version you discovered this bug in (check about page for version information)

No response

Anything else?

No response