Go: Conflicts between identifiers

While trying to compile Go bindings generated by `wit-bindgen` `0.61.1` for https://github.com/Pumpkin-MC/pumpkin-plugin-wit, I've run into issues with symbol conflicts. I've noticed two major categories:

------

```wit
variant my-variant {
tag
}
```

A variant with member `tag` will generate a getter `Tag` conflicting with the internal `Tag` (discriminator) of the variant itself.

------

```wit
record my-variant-item {
// ...
}
variant my-variant {
item(my-variant-item),
}
```

Having a record `XY` conflicts with the enum member produced for the tag for a variant `X` with case `Y`.