fix: refuse abbreviated flags in every script

argparse completed a prefix into the only flag starting with it:
slots.py --emulator read profiles from a directory named after the
emulator and reported nothing, and pipeline.py --all built every pack
variant. Every parser now refuses an abbreviation.

scripts/refresh_data_dirs.py

@@ -518,6 +518,7 @@ def refresh_all(
 
 def main() -> None:
     parser = argparse.ArgumentParser(
+        allow_abbrev=False,
         description="Refresh cached data directories from upstream"
     )
     parser.add_argument("--key", help="Refresh only this entry")