Hand config comparison: base-variant view duplicates and misaligns handshape info

[kvesik]

To reproduce:

1. Open sample corpus (referenced below). Alternatively, create one sign that has a handconfig with a base+variant handshape, and another sign that has a handconfig with the same base + a different variant.
2. Compare those two signs (eg signs 0001 "bent B" and 0002 "contracted B" in sample corpus, or 0003 "ILY" and 0004 "clawed L").
3. Under "options" in sign comparison, choose "compare predefined names with a base-variant hierarchy."
4. Notice that the handshape name from the sign on the left is erroneously duplicated under the sign on the right, and this duplicated info prevents the correct info from being aligned with the content on the left.

Example from sample corpus:

Expected behaviour:
Left sign 0001 shows name "bent B," base "B," and variant "bent." Right sign 0002 shows name "contracted B," base "B," and variant "contracted." These configs should be directly across from each other rather than vertically out of step. Similar for 0003 vs 0004.

Sample corpus