Storyteller Narration Filters (#21767)

This PR adds a feature requested of me by @Fyniiy , adding optional
Filters to the Narrate panel that allow Storytellers to narrate only to
people that meet a set condition. The conditions themselves were
specifically requested to be "Psi Narrates" and "Synth Narrates", with
optional variations on Synth narrates that include people with cranial
implants. While I was touching these files, I've also fixed the improper
message sanitization bug with admin messages in general.

<img width="926" height="536" alt="image"
src="https://github.com/user-attachments/assets/08dcfd2a-5399-48b0-a13d-2bfd3a2c88f0"
/>

Here's a breakdown of the filter options.

1. **Skrell-like Psi-sensitives**: Anyone with a Psi-sensitivity score
of "At least 1". This will include Skrell, anyone with a Psi-receiver,
and people with the High Psi-sensitivity trait. It will exclude people
who are blocked from receiving telepathy for any reason, such as having
a mindshield, mindblanker, or having the psi-suppression power active.
Skrell with the Low Psi-sensitivity trait are counted as "Human-like
Psi-sensitives", and so won't be caught by this filter.
2. **Human-like Psi-sensitives**: Anyone who isn't blocked from
receiving telepathy, and also has a Psi-sensitivity score of "At least
0". This will basically catch "Most people who aren't a Vaurca,
Synthetic, or Diona". It will ignore Humanoids with the Low
Psi-sensitivity trait.
3. **Silicons**: Basically all of the possible robots/IPCs.
4. **Silicons + Implants**: It's fairly common practice during Hivebot
related events for Storytellers to also include characters with brain
implants. This filter automates that by including said brain implant
owners in the "Are you a synthetic?" check.
5. **Hivenet**: Pretty simple, people with the Vaurca language. This
would be Vaurca, plus anyone with the hivenet implants.

code/modules/psionics/mob/mob_helpers.dm

@@ -74,3 +74,15 @@
 
 /mob/living/simple_animal/is_psi_pingable()
 	return psi_pingable
+
+/**
+ * A common layered filter pattern for psionics. Helps with reducing the size of guard clauses.
+ * Includes every psionic check for RECEIVING starting with the Zona Bovina, and ending with Psi-sensitivity.
+ * Set the sensitivity_threshold for your desired minimum Psi-sensitivity to pass.
+ * The most common ones you might want are:
+ * 2 for "Antag-like".
+ * 1 for "Skrell-like".
+ * 0 for "Human-like".
+ */
+/atom/movable/proc/is_telepathy_blocked(var/sensitivity_threshold = 0)
+	return (!has_zona_bovinae() || is_psi_blocked() || check_psi_sensitivity() < sensitivity_threshold)