Remove tag_name_validator function and its usages

The tag_name_validator function, which enforced restrictions on tag names, has been completely removed from the codebase. This change allows for unrestricted tag names, removing any validation based on the regular expression pattern. The decision to remove this function was made to align with the desired behavior of not imposing any limitations on tag names.

This commit removes the tag_name_validator function and any code where it was called, ensuring that tag names are no longer subject to validation checks.