Hovering over the _ in ?_ shows irrelevant docstring

[TwoFX]

Prerequisites

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• Check that your issue is not already filed:
  https://github.com/leanprover/lean4/issues
• Reduce the issue to a minimal, self-contained, reproducible test case.
  Avoid dependencies to Mathlib or Batteries.
• Test your test case against the latest nightly release, for example on
  https://live.lean-lang.org/#project=lean-nightly
  (You can also use the settings there to switch to “Lean nightly”)

Description

When hovering over the ? in ?_ you get the correct docstring for synthetic holes, but when hovering over the _ you get the docstring for normal holes which is not applicable here.

Steps to Reproduce

example : False := by
  refine ?_
  sorry

1. Paste the above code into the Lean web editor
2. Move the cursor on top of the underscore

Expected behavior: Docstring for synthetic holes is shown

Actual behavior: Docstring for normal holes is shown

Versions

4.12.0-nightly-2024-08-13 on live.lean-lang.org

Impact

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