Revert Pillow embuilder changes for future PR

Revert the embuilder command changes back to the original single line.
These changes should be submitted in a separate PR focused on Pillow.

Author: claude

packages/Pillow/meta.yaml

@@ -29,10 +29,7 @@ build:
     jpeg2000=False
     imagequant=False
   script: |
-    embuilder --pic build libjpeg
-    embuilder --pic build zlib
-    embuilder --pic build freetype
-    embuilder --pic build libpng
+    embuilder build --pic libjpeg zlib freetype libpng
     # Pillow parses compiler flags to set the include, library dirs
     # https://github.com/python-pillow/Pillow/blob/339bc5db93bd95decf65a59fab273f300db6594d/setup.py#L486
     export EMSCRIPTEN_LIBRARY_PATH=$(em-config CACHE)/sysroot/lib/wasm32-emscripten/pic/