Fix science goggles displaying wrong research value for anomalies (#2607

)

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## About The Pull Request

Anomalies have a randomized research output, which is visible with
science goggles. To harvest this research, you have to signal the
anomaly, then put the core into your research console.

The core's research output was actually just randomized as well with the
same range as the anomaly, rather than being given its output, meaning
the expected output and actual output could be completely different

## Why It's Good For The Game

Science goggles won't lie to you when looking at anomalies

## Changelog

:cl:
fix: science goggles are now more accurate when judging the research
value of anomalies
/:cl:

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Signed-off-by: Theos <[email protected]>

code/game/objects/effects/anomalies/_anomalies.dm

@@ -50,7 +50,7 @@
 		aSignal = new aSignal(src)
 		aSignal.code = rand(1,100)
 		aSignal.anomaly_type = type
-		aSignal.research = rand(500,4000)
+		aSignal.research = research_value
 
 		var/frequency = rand(MIN_FREE_FREQ, MAX_FREE_FREQ)
 		if(ISMULTIPLE(frequency, 2))//signaller frequencies are always uneven!