Instrument data size being more restricted

[Gumball2415]

No, there's a new issue. "Chopin Barcarolle in F-sharp major Op. 60 (VRC6+MMC5).0cc" can no longer export at all. This is what happens:

 * Multiple expansion chips enabled
Building music data...
 * Sequences used: 16 (1091 bytes)
 * Instruments used: 26 (236 bytes)
 * DPCM samples used: 0 (0 bytes)
 * Grooves used: 0 (1 bytes)
 * Song 0: 117 frames (2574 bytes), 942 patterns (23294 bytes)

 * 228 duplicated pattern(s) removed
 * Samples located at: $C000
Error: Instrument data overflow, can't export file!

Originally posted by @DermotMacFlann in https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker/issues/256#issuecomment-1969189938