feat: add exclusion for specific classes in custom tag creation for styling

    """Some spans apply complex styles part of which involves bolding, italicizing, or underlining. Create custom tags with the class name"""

    CSS_BIU = combine_biu_classes()

    # Classes that should be handled via custom-style in Lua filter, not via text replacement

    EXCLUDE_CLASSES = {"HTML-Keyboard", "HTML-Definition"}

    spans = soup.find_all("span", class_=lambda cls: cls in CSS_BIU if cls else False)

    for span in spans:

        cls = span.get("class")[0]

        # Skip classes that should maintain their span structure for Lua filter processing

        if cls in EXCLUDE_CLASSES:

            continue

        if cls in HANDLE_UNDERSCORE_CLASSES:

            # The styles for these classes do not have the underscores

            cls = cls.replace("_", " ")