ci: Add merge queue trigger (#51833)

This adds a merge queue trigger to our main CI job to allow for a merge
queue which runs a subset of our tests before merging to main.

With this setup, merging to main would probably take around one to two
minutes and would not catch all but definitely most issues. We could
extend it here though as we'd like.

Release Notes:

- N/A

.github/workflows/run_tests.yml

@@ -6,6 +6,7 @@ env:
   RUST_BACKTRACE: '1'
   CARGO_INCREMENTAL: '0'
 on:
+  merge_group: {}
   pull_request:
     branches:
     - '**'
@@ -175,7 +176,7 @@ jobs:
   clippy_windows:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: self-32vcpu-windows-2022
     steps:
     - name: steps::checkout_repo
@@ -205,7 +206,7 @@ jobs:
   clippy_linux:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-16x32-ubuntu-2204
     env:
       CC: clang
@@ -243,7 +244,7 @@ jobs:
   clippy_mac:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-mac-large
     steps:
     - name: steps::checkout_repo
@@ -274,7 +275,7 @@ jobs:
   clippy_mac_x86_64:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-mac-large
     steps:
     - name: steps::checkout_repo
@@ -307,7 +308,7 @@ jobs:
   run_tests_windows:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: self-32vcpu-windows-2022
     steps:
     - name: steps::checkout_repo
@@ -349,7 +350,7 @@ jobs:
   run_tests_linux:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-16x32-ubuntu-2204
     env:
       CC: clang
@@ -407,7 +408,7 @@ jobs:
   run_tests_mac:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-mac-large
     steps:
     - name: steps::checkout_repo
@@ -450,7 +451,7 @@ jobs:
   doctests:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-16x32-ubuntu-2204
     env:
       CC: clang
@@ -494,7 +495,7 @@ jobs:
   check_workspace_binaries:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-8x16-ubuntu-2204
     env:
       CC: clang
@@ -538,7 +539,7 @@ jobs:
   build_visual_tests_binary:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-mac-large
     steps:
     - name: steps::checkout_repo
@@ -563,7 +564,7 @@ jobs:
   check_wasm:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-8x16-ubuntu-2204
     steps:
     - name: steps::checkout_repo
@@ -602,7 +603,7 @@ jobs:
   check_dependencies:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_tests == 'true'
+    if: needs.orchestrate.outputs.run_tests == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-2x4-ubuntu-2404
     env:
       CC: clang
@@ -634,7 +635,7 @@ jobs:
   check_docs:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_docs == 'true'
+    if: needs.orchestrate.outputs.run_docs == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-8x16-ubuntu-2204
     env:
       CC: clang
@@ -683,7 +684,7 @@ jobs:
   check_licenses:
     needs:
     - orchestrate
-    if: needs.orchestrate.outputs.run_licenses == 'true'
+    if: needs.orchestrate.outputs.run_licenses == 'true' && github.event_name != 'merge_group'
     runs-on: namespace-profile-2x4-ubuntu-2404
     steps:
     - name: steps::checkout_repo