fix: Correctly parse `cls.fn<C> = x` #11277

Job	Run time
Build Babel Artifacts on Windows	1m 49s
Prepare Cache	22s
test262 - Prepare for running in parallel	29s
Build Babel Artifacts	1m 24s
Validate Yarn dependencies and constraints	30s
Build Babel 8 Artifacts	5m 17s
Test on Node.js Latest	2m 45s
Test ESM version	2m 10s
Lint	4m 44s
Third-party Parser Tests	1m 37s
Test @babel/eslint-* with ESLint 8.0.0	29s
Test @babel/eslint-* with ESLint 7.5.0	30s
Test @babel/runtime integrations	1m 26s
Test on Node.js (20)	1m 27s
test262 (0)	10m 10s
Test on Node.js (18)	1m 40s
test262 (1)	6m 50s
Test on (windows-latest)	2m 14s
test262 (2)	7m 50s
Test on Node.js (16)	1m 44s
Test on (macos-latest)	1m 30s
Test on Node.js (14)	1m 47s
test262 (3)	6m 25s
Test on Node.js (12)	1m 51s
test262 (4)	7m 58s
Test on Node.js (10)	2m 42s
test262 (5)	7m 33s
Test on Node.js (8)	3m 32s
test262 (6)	7m 49s
Test on Node.js (6)	4m 34s
test262 (7)	5m 52s
Test Babel 8 breaking changes on (ubuntu-latest)	1m 32s
Test Babel 8 breaking changes on (windows-latest)	2m 35s
Test Babel 8 breaking changes on (macos-latest)	1m 40s
test262 - Analyze results	41s
	1h 53m 28s

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