ghidra.program.database.code.InstructionDB does not return complete/correct operand data for aarch64 ld1r instruction

[mike-hunhoff]

Describe the bug
ghidra.program.database.code.InstructionDB does not return complete/correct operand data for aarch64 ld1r instruction e.g.

To Reproduce

1. Load and analyze https://github.com/mandiant/capa-testfiles/blob/3c790887a3f3aa671b2ccc1ec1fd14feff354f5c/aarch64/d1e6506964edbfffb08c0dd32e1486b11fbced7a4bd870ffe79f110298f0efb8.elf_
2. Execute code shown above for instruction at 0x119970

Expected behavior
I'd expect the number of operands to equal two, and the arrangement specifier to be fully represented, resulting in the following output:

(0, [v, 0, ., 1, 6, B])
(1, [x20])

Environment:

• OS: Ubuntu 24
• Java Version: 17
• Ghidra Version: 11.1
• Ghidra Origin: GitHub distro

[ghidra1]

This effectively duplicates #6821 and is not a bug as discussed in that issue.

[ghidra1]

Your example appears to have a print-piece which is empty. This is likely due to a constructor which may have an additional "operand" with a default case where it need not be specified.