fix(parser): stop folding trailing comments into Kotlin import targets

tree-sitter-kotlin folds any comment that follows the LAST import into that
import_header node. `_extract_import` had no Kotlin branch, so it fell through
to the generic `imports.append(text)` fallback and recorded the entire node
text — import statement plus the trailing comment — as the module name.

`_do_resolve_module` then turned that string into a filesystem path and called
`os.stat` on it. A trailing KDoc block long enough to exceed the path limit
raised `OSError: [Errno 63] File name too long`, which `_extract_imports` does
not catch, so the whole file failed to parse.

Every Kotlin file was affected: the last import always produced an
IMPORTS_FROM edge whose target carried the trailing comment. Only files whose
trailing comment was long enough to overflow the path limit actually crashed.

Add a Kotlin branch that reads the `identifier` child (comments are separate
`multiline_comment` siblings) and re-appends ".*" for wildcard imports.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>