Optimize the use of `assertThisInitialized` after `super()` #10962

Job	Run time
Build Babel Artifacts on Windows	1m 47s
Prepare Cache	22s
test262 - Prepare for running in parallel	32s
Test ESM version	2m 13s
Build Babel Artifacts	1m 16s
Test on Node.js Latest	2m 51s
Build Babel 8 Artifacts	2m 51s
Validate Yarn dependencies and constraints	27s
Lint	2m 4s
Test @babel/eslint-* with ESLint 7.5.0	36s
Third-party Parser Tests	1m 53s
Test @babel/runtime integrations	1m 24s
Test on Node.js (20)	1m 37s
test262 (0)	10m 6s
Test on Node.js (18)	1m 36s
test262 (1)	7m 3s
Test on (windows-latest)	2m 19s
Test on Node.js (16)	1m 52s
Test on (macos-latest)	2m 3s
test262 (2)	7m 53s
test262 (3)	6m 31s
test262 (4)	8m 18s
Test on Node.js (14)	1m 44s
test262 (5)	7m 35s
Test on Node.js (12)	1m 58s
test262 (6)	7m 48s
Test on Node.js (10)	3m 5s
test262 (7)	5m 50s
Test on Node.js (8)	4m 19s
Test on Node.js (6)	5m 30s
Test Babel 8 breaking changes on (ubuntu-latest)	1m 58s
Test Babel 8 breaking changes on (windows-latest)	3m 11s
Test Babel 8 breaking changes on (macos-latest)	5m 21s
test262 - Analyze results	35s
	1h 56m 28s

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