chore(infra): clean build check will log recommended steps (#28044)

Issue number: N/A

---------

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issue. -->

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## What is the current behavior?
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When the CI process detects a diff between the output in CI after
running `npm run build` versus the checked out branch, it will log the
diff and exit. It isn't very clear to developers what they need to do or
why this job step exists.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- Logs a prettier error message to the developer to let them know the
steps they can take when a diff is detected in CI

![CleanShot 2023-08-22 at 15 05
03](https://github.com/ionic-team/ionic-framework/assets/13732623/0397523e-5f4d-4ab6-8a2e-d9ecc4d085ba)

Example run:
https://github.com/ionic-team/ionic-framework/actions/runs/5942940488/job/16117074372?pr=28044

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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and migration path for existing applications below. -->


## Other information

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screenshots of how the component looks before and after the change. -->

.github/workflows/actions/test-core-clean-build/action.yml

@@ -13,6 +13,15 @@ runs:
         path: ./core
         filename: CoreBuild.zip
     - name: Check Diff
-      run: git diff --exit-code
+      run: |
+        git diff --exit-code || {
+          echo -e "\033[1;31m⚠️ Error: Differences Detected ⚠️\033[0m"
+          echo -e "\033[1;31mThere are uncommitted changes between the build outputs from CI and your branch.\033[0m"
+          echo -e "\033[1;31mPlease ensure you have followed these steps:\033[0m"
+          echo -e "\033[1;31m1. Run 'npm run build' locally to generate the latest build output.\033[0m"
+          echo -e "\033[1;31m2. Commit and push all necessary changes to your branch.\033[0m"
+          echo -e "\033[1;31m3. Compare and validate the differences before proceeding.\033[0m"
+          exit 1
+        }
       shell: bash
       working-directory: ./core