fix: align DT_TIMEWINDOW with sv_rehlds_local_gametime #512

Job	Run time
Windows	2m 6s
Linux	2m 16s
Test demos (rehlds-phys-single1, Half-Life: Physics singleplayer)	50s
Test demos (cstrike-muliplayer-1, CS: Multiplayer)	46s
Test demos (shooting-hl-1, Half-Life: Shooting with several weapons)	42s
Test demos (crossfire-1-multiplayer-1, Half-Life: Multiplayer on crossfire map)	41s
Publish	17s
	7m 38s

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