Unwanted tags in some GBA game titles

Hello.

For some reason, a recent update has added x### tags to some Game Boy Advance games in the playlist, for example:

x109 - Super Mario Advance 4 - Super Mario Bros. 3 (USA) (Rev 1) (Virtual Console)

which is the one I noticed. Checking the dat file it seems that the initial No-Intro number is filtered for number tags only (no x), examples:

Fixed:

    name "Super Mario Advance 4 - Super Mario 3 + Mario Brothers (Japan)"
    rom ( name "1076 - Super Mario Advance 4 - Super Mario 3 + Mario Brothers (Japan).gba" size 4194304 crc F3C87306 md5 E559E292AA9D44287B052342D6469967 sha1 19F7928BC4FFD733D71884DAE9AD9B7F4007D38D serial "AX4J" )

Not Fixed:

    name "x250 - Super Mario Advance 4 - Super Mario 3 + Mario Brothers (Japan) (Rev 2) (Virtual Console)"
    rom ( name "x250 - Super Mario Advance 4 - Super Mario 3 + Mario Brothers (Japan) (Rev 2) (Virtual Console).gba" size 8388608 crc 4AEE9C77 md5 ED52707B19848C480866A86F28268273 sha1 72CCC0ECCE6CE08EADCE1B3DA4873CDD91851496 serial "AX4J" )

Compare the affected playlist titles with the corresponding dat entries shown in the report, then trace the title-cleaning or No-Intro number-tag handling entry point. Verify that the x### examples no longer appear while ordinary numeric tags remain unchanged, and add or update a regression test if the repository has one.