[fix]: all long consecutive alphanums are probably evil, not just lowercase

[ChALkeR]

Earlier, all useragents with lowercase alphanum strings of 100 chars without separators were treated as unrecognised for safety (because uap-core regexes are unsafe), but that did not affect uppercase strings.

Timeline:

• 64b15c9 introduced the original check.
• b18cf7c added lowercase letters.
• 687afe4 added spaces and control to probably evil consecutive strings
• This one adds uppercase letters, i.e. case-insensitive comparison while calculating the consecutive length.