lvt names for the exceptions in catch clauses aren't emitted

[MiniDigger]

Vineflower version

1.11 @ ef138de

Describe the bug

right now var names are just auto incremented here https://github.com/Vineflower/vineflower/blob/master/src/org/jetbrains/java/decompiler/modules/decompiler/stats/CatchStatement.java#L50, I expect to see the name listed in the lvt.

Additional information

https://github.com/Vineflower/vineflower/blob/master/testData/src/java8/pkg/TestTryCatchFinally.java#L28 is emitted as var8, not e2
https://github.com/Vineflower/vineflower/blob/master/testData/results/pkg/TestTryCatchFinally.dec#L10

from discord:

i believe it's because the variables the catch statement adds are synthetic
basically to fix it i think the catch variables need to be associated with lvts
~ Jasmine