fix(tools): cem demo paths and dev server #10569

Job	Run time
Verify that build runs on Windows	1m 28s
Unit Tests (Web Test Runner)	1m 8s
SSR Tests (Playwright)	1m 37s
Lint files	38s
Compile project (22)	53s
Compile project (24)	51s
Validate successful build on main	7s
Publish Playwright Report	22s
	7m 4s

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