Add debugpy bundle import passthrough when debug mode is enabled. deb… #5411

Job	Run time
check-protos	8m 59s
cloud-test	2m 0s
test-latest-deps	10m 52s
build-lint-test (3.10, ubuntu-latest)	14m 42s
build-lint-test (3.10, windows-latest)	21m 46s
build-lint-test (3.14, macos-arm)	11m 40s
build-lint-test (3.10, ubuntu-arm)	12m 34s
features-tests / test	8m 52s
build-lint-test (3.10, macos-arm)	10m 5s
build-lint-test (3.14, windows-latest)	19m 37s
build-lint-test (3.14, ubuntu-latest)	19m 25s
build-lint-test (3.14, ubuntu-arm)	11m 34s
	2h 32m 6s

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