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/generate_site.py

@@ -3749,6 +3749,7 @@ def generate_mkdocs_nav(
 
 def main() -> None:
     parser = argparse.ArgumentParser(
+        allow_abbrev=False,
         description="Generate MkDocs site from project data"
     )
     parser.add_argument("--db", default="database.json")