Protobuf - `sintXX`, `fixedXX` and `sfixedXX` map keys and values not serialized / deserialized correctly.

[Dogacel]

Describe the bug

Protobuf maps with type sint32, sint64, fixed32, fixed64, sfixed32, and sfixed64 can't be serialized & deserialized correctly.

To Reproduce

    @ProtoNumber(62) val mapFixed32Fixed32: Map<Int, Int> = emptyMap(),
    @ProtoNumber(63) val mapFixed64Fixed64: Map<Long, Long> = emptyMap(),
    @ProtoNumber(64) val mapSfixed32Sfixed32: Map<Int, Int> = emptyMap(),
    @ProtoNumber(65) val mapSfixed64Sfixed64: Map<Long, Long> = emptyMap(),

Are not serialized / deserialized correctly.

Expected behavior

Should serialize and deserialize correctly.

Environment

• Kotlin version: 1.9.0
• Library version: 1.6.1
• Kotlin platforms: All