[BUG]: Debugger: 8 byte searches are broken

[Loy2up]

Describe the Bug

Searching for 8 bytes does not always work. Sometimes it does, others times it doesn't. I was thinking #12362 would fix it, but apparently not. Some values cannot be found at all, while some can be found, but not every single instance. For example, if you were searching for 5 sets of 8 byte data, you would only find a number such as 3 out of 5 or none of them at all. Here's a test I've done to help find the issue:

`Works

FFFFFFFF800195E8
0060F8093C1D0008
8CA300008E050008
00000000266A0048
1440FFFA00000000
03E0000800000000

Doesn't Work

FE02005000000000
8D22000400000000
0080882D7FB10410
8C620000244395B8
9062DD3003E00008`

Reproduction Steps

Try searching for 8 bytes, and see how fickle the search is.

Expected Behavior

Searching for 8 bytes should always work.

PCSX2 Revision

v2.3.184

Operating System

Windows 11

If Linux - Specify Distro

No response

Logs & Dumps

No response