Add type annotations to server directory files #8818

Job	Run time
Build Image (nikolaik/python-nodejs:python3.12-nodejs22, nikolaik)	15m 58s
Build Image (nikolaik/python-nodejs:python3.12-nodejs22, nikolaik)	15m 58s
Build App Image	4m 12s
Build App Image	4m 12s
RT Unit Tests (openhands) (nikolaik)	22m 57s
RT Unit Tests (openhands) (nikolaik)	23m 5s
RT Unit Tests (Root) (nikolaik)	22m 46s
RT Unit Tests (Root) (nikolaik)	22m 49s
Update PR Description	7s
Update PR Description	7s
Verify Hash Equivalence in Runtime and Docker images (nikolaik)	1m 8s
Verify Hash Equivalence in Runtime and Docker images (nikolaik)	1m 8s
All Runtime Tests Passed	1s
All Runtime Tests Passed	1s
All Runtime Tests Passed	0s
All Runtime Tests Passed	0s
	2h 14m 29s

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