Yes, the first LD releases had the theatrical Dolby Surround mixes (the 2.0/matrixed 4.0). These tracks are included on Despecialized and 4K77/4K83’s releases, too (and 4K83, as a bonus, has the actual Dolby Surround audio from the print as the primary audio track).
The mono tracks weren’t, though - the 1977 35mm mono we have from early TV broadcast recordings, and the ESB and ROTJ 16mm mono tracks we have from 16mm prints.