fix: `systemjs` re-traverses helpers #10621

Job	Run time
Prepare Cache	33s
test262 - Prepare for running in parallel	28s
Build Babel Artifacts on Windows	1m 55s
Build Babel Artifacts	1m 13s
Test ESM version	2m 30s
Build Babel 8 Artifacts	2m 45s
Test on Node.js Latest	2m 54s
Validate Yarn dependencies and constraints	26s
Lint	2m 6s
Test on (windows-latest)	2m 15s
Test on (macos-latest)	3m 2s
Third-party Parser Tests	1m 35s
Test @babel/eslint-* with ESLint 7.5.0	30s
Test @babel/runtime integrations	1m 32s
Test on Node.js (20)	1m 31s
test262 (0)	10m 59s
Test on Node.js (18)	1m 41s
test262 (1)	7m 36s
Test on Node.js (16)	1m 46s
test262 (2)	8m 32s
Test on Node.js (14)	1m 51s
test262 (3)	7m 14s
Test on Node.js (12)	2m 4s
test262 (4)	8m 37s
Test on Node.js (10)	2m 55s
Test on Node.js (8)	3m 47s
test262 (5)	8m 5s
Test on Node.js (6)	4m 52s
test262 (6)	8m 37s
test262 (7)	6m 9s
Test Babel 8 breaking changes on (ubuntu-latest)	1m 55s
Test Babel 8 breaking changes on (windows-latest)	2m 53s
Test Babel 8 breaking changes on (macos-latest)	4m 9s
test262 - Analyze results	37s
	1h 59m 34s

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