pin CI to macos 14 until iOS example is updated and fix invalid_params tests (#20640)

# Objective

- Bevy repo was just updated to macos-15 images by GitHub
- This breaks building for iOS as the SDK we use is no longer available
- Also closes #20629

## Solution

- Pin to macos-14 until we've updated iOS example

---------

Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

Author: mockersf

.github/workflows/example-run.yml

@@ -20,7 +20,7 @@ env:
 
 jobs:
   run-examples-macos-metal:
-    runs-on: macos-latest
+    runs-on: macos-14
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4

.github/workflows/send-screenshots-to-pixeleagle.yml

@@ -51,7 +51,7 @@ jobs:
           branch: ${{ inputs.branch }}
         run: |
           # Create a new run with its associated metadata
-          metadata='{"os":"${{ inputs.os }}", "commit": "${{ inputs.commit }}", "branch": "$branch"}'
+          metadata='{"os":"${{ inputs.os }}", "commit": "${{ inputs.commit }}", "branch": "'$branch'"}'
           run=`curl https://pixel-eagle.com/$project/runs --json "$metadata" --oauth2-bearer ${{ secrets.PIXELEAGLE_TOKEN }} | jq '.id'`
 
           SAVEIFS=$IFS

.github/workflows/update-caches.yml

@@ -81,7 +81,7 @@ jobs:
           - os: ubuntu-latest
             toolchain: stable
             target: aarch64-linux-android
-          - os: macos-latest
+          - os: macos-14
             toolchain: stable
             target: aarch64-apple-ios-sim
 

.github/workflows/validation-jobs.yml

@@ -26,7 +26,7 @@ env:
 jobs:
   build-and-install-on-iOS:
     if: ${{ github.event_name == 'merge_group' }}
-    runs-on: macos-latest
+    runs-on: macos-14
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4

crates/bevy_ecs/src/system/system.rs

@@ -533,7 +533,15 @@ mod tests {
         let result = world.run_system_once(system);
 
         assert!(matches!(result, Err(RunSystemError::Failed { .. })));
-        let expected = "Parameter `Res<T>` failed validation: Resource does not exist\n";
-        assert!(result.unwrap_err().to_string().contains(expected));
+
+        let expected = "Resource does not exist";
+        let actual = result.unwrap_err().to_string();
+
+        assert!(
+            actual.contains(expected),
+            "Expected error message to contain `{}` but got `{}`",
+            expected,
+            actual
+        );
     }
 }

crates/bevy_ecs/src/system/system_registry.rs

@@ -1005,8 +1005,15 @@ mod tests {
         let result = world.run_system(id);
 
         assert!(matches!(result, Err(RegisteredSystemError::Failed { .. })));
-        let expected = "System returned error: Parameter `Res<T>` failed validation: Resource does not exist\n";
-        assert!(result.unwrap_err().to_string().contains(expected));
+        let expected = "Resource does not exist";
+        let actual = result.unwrap_err().to_string();
+
+        assert!(
+            actual.contains(expected),
+            "Expected error message to contain `{}` but got `{}`",
+            expected,
+            actual
+        );
     }
 
     #[test]