fix(core): fix primitive-to-primitive conversions

[pubiqq]

The PR fixes incorrect primitive-to-primitive conversions:

• byte -> char - WIDER (not CONFLICT)
• short -> char - WIDER (not CONFLICT)
• char -> byte - WIDER (not CONFLICT)
• char -> short - WIDER (not CONFLICT)
• long -> float - NARROW (not WIDER)
• float -> long - WIDER (not NARROW)
• numeric -> void - CONFLICT (not NARROW)
• void -> numeric - CONFLICT (not WIDER)

Fixes #1620, fixes #1621, fixes #1626, indirectly fixes JadxRuntimeException: Unknown type in literalToString: void.

[skylot]

@pubiqq please describe what compare got changed/improved, because it is hard to see what was wrong only from changes. Also, please provide decompilation tests or at least samples which are improved after this change.

[skylot]

Thanks.
I see, so these issues was in incorrect cast removal because of incorrect type compare for long and float.
Looks like this happen because type inference never compare these types (2 register types not clash with 1 register types), and that was the only usage of that compare for a long time, cast check was added later.

[pubiqq]

The issue is not related to long and float only, but anyway, it's fixed now.