ci: Fix merge queue trigger (#54611)

This one was supposed to run, but was accidentally skipped.

Release Notes:

- N/A

.github/workflows/run_tests.yml

@@ -206,7 +206,7 @@ jobs:
   clippy_linux:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
+    if: needs.orchestrate.outputs.run_tests == 'true'
     runs-on: namespace-profile-16x32-ubuntu-2204
     env:
       CC: clang

tooling/xtask/src/tasks/workflows/run_tests.rs

@@ -52,7 +52,7 @@ pub(crate) fn run_tests() -> Workflow {
             .and_not_in_merge_queue()
             .then(clippy(Platform::Windows, None)),
         should_run_tests
-            .and_not_in_merge_queue()
+            .and_always()
             .then(clippy(Platform::Linux, None)),
         should_run_tests
             .and_not_in_merge_queue()