[ci] Use larger app partition for esp32-s3-idf component test grouping (#16430)

tests/test_build_components/build_components_base.esp32-s3-idf.yaml

@@ -7,6 +7,9 @@ esp32:
   variant: ESP32S3
   framework:
     type: esp-idf
+  # Use custom partition table with larger app partition (3MB)
+  # Default IDF partitions only allow 1.75MB which is too small for grouped tests
+  partitions: ../partitions_testing.csv
 
 logger:
   level: VERY_VERBOSE