The importer does not honour ignore_patterns for REST sources

[andrewpollock]

Describe the bug
#2434 (comment) identified that

osv.dev/docker/importer/importer.py

Line 652 in f182e67

def _process_updates_rest(self, source_repo: osv.SourceRepository):

does not call

osv.dev/docker/importer/importer.py

Line 58 in f182e67

def _is_vulnerability_file(source_repo, file_path):

and therefore the SourceRepo ignore_patterns is not honoured

Expected behaviour
ignore_patterns behaves consistently for all supported source types

[github-actions]

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