Fix typescript@next support #10019

Job	Run time
Type Checking (current version)	56s
Linting	1m 7s
Basic Test	1m 34s
Type Checking (other supported versions) (4.9)	1m 16s
Type Checking (other supported versions) (5.0)	1m 3s
Type Checking (other supported versions) (5.1)	1m 6s
Type Checking (other supported versions) (5.2)	1m 13s
Type Checking (other supported versions) (5.3)	1m 9s
Blueprint Tests	9m 39s
Node.js Tests	56s
Browserstack Tests (Safari, Edge)	5m 50s
Browser Tests (Firefox)	1m 41s
Smoke tests (Full Ember Apps) (classic-basics)	1m 16s
All deprecations enabled	1m 32s
Smoke tests (Full Ember Apps) (embroider-basics)	1m 13s
All deprecations enabled, with optional features	1m 37s
Deprecations as errors	1m 31s
Deprecations as errors, with optional features	1m 27s
Production build	1m 40s
Production build, with optional features	1m 27s
Deploy tags to npm	0s
Publish channel to s3	0s
Notify Discord	0s
Publish alpha from default branch	0s
	39m 13s

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