fix holograms not fixing renderbounds after fullupdate

[yingKatsu]

#1876

i notice before that the existing code for setting render bounds didnt check for if the networkentitycreated ent was a hologram? is this hook in hologram cl_init also for custom props too?

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[yingKatsu]

OnScaleChanged contains

		local mins, maxs = self:GetModelBounds()
		if mins then
			self:SetRenderBounds(mins * scale, maxs * scale)
		end

which is core to fixing #1876. I just took it from the ENT:Initialize function because it wasnt being called when holograms are destroyed and remade clientside due to fullupdates. I ran this current code live and it fixed the problem displayed in the video in the issue.

However, upon reading through OnScaleChanged, it does contain overlap with code already running in this hook. I will just call this specific excerpt then instead of the whole function.

[yingKatsu]

video showcasing live vs my patch:
https://cdn.discordapp.com/attachments/934077057707704372/1297553036918521926/2024-10-20_08-31-26.mp4?ex=671657ef&is=6715066f&hm=ff7fc0547213a20825cdab7e85520e3b13a5bfe3c58e423364aa8dd8143d4389&