ci: request-reviewers: do not request PR author

[trueNAHO]

Closes: https://github.com/nix-community/stylix/issues/1867

I suggest optimistically closing #1867 with this PR. We can re-open it, if the issue is still not resolved.

This PR_AUTHOR filtering was accidentally removed in the following patch:

From c81f587ce7a796b4bbfb7792ae42b12e1446fb29 Mon Sep 17 00:00:00 2001
From: NAHO <90870942+trueNAHO@users.noreply.github.com>
Date: Thu, 24 Jul 2025 20:24:55 +0200
Subject: [PATCH 3/5] ci: ping-maintainers: overhaul implementation

---
 .github/workflows/ping-maintainers.yml | 79 +++++++++++++-------------
 1 file changed, 39 insertions(+), 40 deletions(-)

diff --git a/.github/workflows/ping-maintainers.yml b/.github/workflows/ping-maintainers.yml
index f986010..fab3d6c 100644
--- a/.github/workflows/ping-maintainers.yml
+++ b/.github/workflows/ping-maintainers.yml
[...]
         env:
-          PR_AUTHOR: ${{ github.event.pull_request.user.login }}
[...]
-              # Do not request the original author or already requested
-              # reviewers.
-              if [[
-                "$gh_id" == "$PR_AUTHOR" || \
-                jq "index(\"$gh_id\") != null" <<<"$existing_reviewers"
-              ]]; then
-                  continue
-              fi

-- #1053 (review)

---

• I certify that I have the right to submit this contribution under the MIT license
• Commit messages adhere to Stylix commit conventions
• Theming changes adhere to the Stylix style guide
• Changes have been tested locally
  • Non-exhaustively tested the jq command with dummy input.
• Changes have been tested in testbeds
• Each commit in this PR is suitable for backport to the current stable branch

[stylix-automation]

Successfully created backport PR for release-25.05:

• [release-25.05] ci: request-reviewers: do not request PR author #1887