No photos on phone, but Photos supposedly taking up gigabytes of space

I have an iPhone 13 (MNGD3LL/A) with iOS 18.5 (22F76), which is the latest general release available to me at time of writing. There are no photos in the **Photos** app on this device (except screenshots taken for this SE question). There are no photos in the **Recently Deleted** album on this device. Despite having only a few screenshots on this device the system shows that **Photos** are using ~26 GB of storage space. Almost 20% of the phone's disk is occupied by data for photos, according to the iOS **iPhone Storage** top-level settings. The individual **Photos** entry under **iPhone Storage** agrees that it's using ~26 GB of storage space. I deleted every photo and video from this iPhone a couple weeks and this space has not been reclaimed. I capture some multimedia every now and then, but delete it almost immediately, and then purge it from **Recently Deleted**. I've seen relatively old questions similar to mine reference "phantom" photos, and the idea that [manually changing the clock on my device](https://apple.stackexchange.com/questions/263732/photos-taking-up-storage-on-iphone-when-i-have-no-photos) might help reveal hidden photos that are stealing this space. I've found [that advice](https://apple.stackexchange.com/a/202692/130404) is not relevant to me. It seems like a functional and/or UX bug on Apple's part that the system can't explain this discrepancy between the reported quantity of photos on the phone and the reported storage usage by the **Photos** library on the phone. [Resetting my device to factory settings](https://apple.stackexchange.com/a/166803/130404) would likely fix the issue, but that seems heavy handed, and I was hoping a more elegant fix might exist here in the year 2025. Is there another way to resolve this issue?