Fixed Typos in Offer Prompt + Added New Icon (#551)

# Description

Minor spelling mistake ops, also new icon by me.

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<details><summary><h1>Media</h1></summary>
<p>

Offering an item

![Offer](https://github.com/user-attachments/assets/bd11b9bd-1b21-422b-8007-44f48dbf8c55)

Cancelling the offer

![Cancel](https://github.com/user-attachments/assets/e51a5309-815f-4407-bb58-e37e80b3dbb6)

Accepting the offer

![Accept](https://github.com/user-attachments/assets/37f07ed7-69cc-486e-a5c9-5cfab7683142)

Closeup of the new icon

![image](https://github.com/user-attachments/assets/08948ad5-a538-4166-a3af-88f23ab15cad)

</p>
</details>

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# Changelog

:cl:
- add: Added a new icon to the offer item interaction.
- fix: Fixed typos in the offer item prompts.

Resources/Locale/en-US/interaction/offer-item-system.ftl

@@ -2,12 +2,12 @@ offer-item-empty-hand = You don't have anything in your hand to give!
 
 offer-item-full-hand = Your hand isn't free to receive the item.
 
-offer-item-try-give = You offer the {THE($item)} to {$target}
-offer-item-try-give-target = {$user} offers you a {THE($item)}
+offer-item-try-give = You offer {THE($item)} to {$target}
+offer-item-try-give-target = {$user} offers you {THE($item)}
 
 offer-item-give = You handed {THE($item)} to {$target}
 offer-item-give-other = {$user} handed {THE($item)} to {$target}
-offer-item-give-target = {$user} handed you a {THE($item)}
+offer-item-give-target = {$user} handed you {THE($item)}
 
 offer-item-no-give = You stop offering {THE($item)} to {$target}
-offer-item-no-give-target = {$user} is no longer offer a {THE($item)} to you
+offer-item-no-give-target = {$user} is no longer offering {THE($item)} to you

Resources/Textures/Interface/Alerts/offer_item.rsi/meta.json

@@ -1,7 +1,7 @@
 {
   "version": 1,
   "license": "CC-BY-SA-3.0",
-  "copyright": "https://github.com/ss220-space/Paradise/blob/master220/icons/mob/screen_alert.dmi",
+  "copyright": "Original icon taken from https://github.com/ss220-space/Paradise/blob/master220/icons/mob/screen_alert.dmi, modified by Mocho",
   "size": {
     "x": 32,
     "y": 32