[BWA-182] MTLS not used in icon retrieval logic.

### Steps To Reproduce

First of all using MTLS with cloudflare tunnel. I can create and delete items just fine.
This generated no log rules as they pass successfully.

However in my cloudflare logs I see a block on rule being activated on: (Method GET)
/icons/ < ip of local pihole > /icon.png
and /icons/ < ip of selfhosted instance > /icon.png
As both do this on my DNS record and I see source IP to be sure it's my attempts I wonder if this is a app bug or not.
As user agent the following is mentioned
Dalvik/2.1.0 (Linux; U; Android 15; CPH2581 Build/AP3A.240617.008)

I think somewhere something in the code is skipping the MTLS check.
The app it self doesn't show any error. I only see this in the logs.

### Expected Result

no security error logs

### Actual Result

Security errors that no MTLS is used.

### Screenshots or Videos

_No response_

### Additional Context

_No response_

### Build Version

2025.6.1 (20398)

### What server are you connecting to?

Self-host

### Self-host Server Version

2025.5.0

### Environment Details

- OnePlus 12 (Oxygen OS 15.0), Android 15 with july 2025 security update

### Issue Tracking Info

- [x] I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.