[SL-ONLY] Optimize build behavior for the sample apps builder (#263)

Author: mkardous-silabs

.github/workflows/silabs-build-examples.yaml

@@ -9,6 +9,11 @@ on:
         branches:
             - main
             - "release_*"
+    workflow_dispatch:
+
+concurrency:
+    group: silabs-build-examples-${{ github.ref }}
+    cancel-in-progress: true
 
 jobs:
     build-lighting-app:

.github/workflows/silabs-common-build.yaml

@@ -18,6 +18,7 @@ jobs:
             image: ghcr.io/project-chip/chip-build-efr32:95
 
         strategy:
+            fail-fast: false
             matrix:
                 platform: [mg24, mgm24, mg26, siwx]