Fix decorator evaluation private environment #10915

Job	Run time
Build Babel Artifacts on Windows	1m 52s
Prepare Cache	26s
test262 - Prepare for running in parallel	31s
Validate Yarn dependencies and constraints	25s
Test on Node.js Latest	2m 50s
Test ESM version	2m 15s
Build Babel Artifacts	1m 18s
Build Babel 8 Artifacts	2m 49s
Third-party Parser Tests	1m 43s
Test @babel/runtime integrations	1m 15s
Test @babel/eslint-* with ESLint 7.5.0	36s
Lint	2m 11s
Test on Node.js (20)	1m 36s
Test on (windows-latest)	2m 27s
test262 (0)	10m 31s
Test on Node.js (18)	1m 34s
Test on (macos-latest)	3m 0s
Test on Node.js (16)	1m 45s
test262 (1)	6m 50s
test262 (2)	7m 51s
Test on Node.js (14)	1m 44s
Test on Node.js (12)	2m 3s
Test on Node.js (10)	3m 12s
test262 (3)	6m 27s
Test on Node.js (8)	3m 30s
test262 (4)	8m 14s
Test on Node.js (6)	4m 52s
test262 (5)	7m 41s
test262 (6)	7m 45s
test262 (7)	5m 42s
Test Babel 8 breaking changes on (ubuntu-latest)	1m 54s
Test Babel 8 breaking changes on (windows-latest)	2m 50s
Test Babel 8 breaking changes on (macos-latest)	2m 37s
test262 - Analyze results	41s
	1h 52m 57s

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