Steps to replicate the issue (include links if applicable):

• Block a user, which was never blocked before.
• Suppress the log action for that block (Special:Log/block => Special:RevisionDelete with "Hide target and parameters" and "Suppress data from administrators as well as others")
• Edit the user page of the blocked user with the suppressor (rights suppressrevision or viewsuppressed)
  • The log extract about the block is shown above the edit form ("This user is currently blocked. The latest block log entry is provided below for reference), the details are suppressed, there is a link to "change visibility" or "show" the details (that is expected)
• Edit the user page of the blocked user with an logged out user or non-sysop user (user group without deletedhistory right)
  • No log extract about the block is shown above the edit form (that is expected)
• Edit the user page of the blocked user with a sysop account (but not suppressor)

What happens?:
The log extract is show, the details are grey and the word "show" is not linked. According to avoid brute-force searches (T19342) and the fix https://gerrit.wikimedia.org/r/c/mediawiki/core/+/416595 for T188145 the log should not shown to the user.

In https://gerrit.wikimedia.org/r/c/mediawiki/core/+/416595 the constants for USER and ACTION are swapped, but the right side of the comparison in the next line was not adjust. That results in the following SQL condition ((log_deleted & 9) != 12) which is always true

What should have happened instead?:

Show no log extract. That no or the wrong block info is shown is another bug (T277466)

Special:Log is using the same code to build the query, so visiting Special:Log/block and use as "target" the blocked user, the log is shown, which is not expected.