Fix bundler tests assertions on windows #2220

Job	Run time
Lint	3m 5s
Benchmarks	37m 6s
Flow	1m 46s
Unit tests (ubuntu-latest, Node 14)	13m 53s
Unit tests (macos-latest, Node 14)	32m 6s
Unit tests (windows-latest, Node 14)	28m 28s
Integration tests (ubuntu-latest, Node 14)	18m 39s
Unit tests (ubuntu-latest, Node 16)	13m 35s
Integration tests (macos-latest, Node 14)	23m 0s
Unit tests (macos-latest, Node 16)	20m 0s
Integration tests (windows-latest, Node 14)	33m 40s
Unit tests (windows-latest, Node 16)	29m 27s
Integration tests (ubuntu-latest, Node 16)	20m 11s
Integration tests (macos-latest, Node 16)	20m 18s
Integration tests (windows-latest, Node 16)	30m 54s
Test report	2s
	5h 26m 10s

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