Bazel

Move the windows path length workarounds out of protobuf-ci #902

Job	Run time
test / matrix-prep-bazelversion	5s
test / matrix-prep-os	1s
test / test (ubuntu-latest, examples, true)	5m 15s
test / test (ubuntu-latest, examples, false)	8m 28s
test / test (ubuntu-latest, 6.4.0, examples, true)	5m 26s
test / test (ubuntu-latest, 6.4.0, examples, false)	9m 12s
test / test (windows-latest, examples, true)	10m 4s
test / test (windows-latest, examples, false)	9m 18s
test / test (macos-latest, examples, true)	7m 26s
test / test (macos-latest, examples, false)	25m 37s
	1h 20m 52s

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