Fix TargetIcon color to match other icons in HelpModal (#2865)

If this PR fixes an issue, link it below. If not, delete these two
lines.
Resolves
https://discord.com/channels/1330359017247346812/1330365278420471911/1358027146139795486

## Description:

In HelpModal, only the TargetIcon was displayed in red, which was
inconsistent with the other icons.
This PR updates its color to white so it matches the rest of the icons.

before 

<img width="397" height="458" alt="スクリーンショット 2026-01-11 22 24 54"
src="https://github.com/user-attachments/assets/2a2f5aa0-a31c-4ecb-887e-f151689c3236"
/>

after

<img width="370" height="438" alt="スクリーンショット 2026-01-11 22 25 08"
src="https://github.com/user-attachments/assets/d0c74805-8bc8-4e94-8a18-23488aba0389"
/>


## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:
aotumuri

Co-authored-by: FloPinguin <25036848+FloPinguin@users.noreply.github.com>

src/client/HelpModal.ts

@@ -700,7 +700,7 @@ export class HelpModal extends BaseModal {
                     </li>
                     <li class="flex items-center gap-3">
                       <img
-                        src="/images/TargetIcon.svg"
+                        src="/images/TargetIconWhite.svg"
                         class="w-8 h-8 scale-75 origin-left"
                       />
                       <span>${translateText("help_modal.info_target")}</span>