Metadata values are ignored when loading COG from URL

**Describe the bug**
When loading a COG from URL, metadata values are not used. This might be intentional, but there is nothing in the documentation indicate that that's the case.

**To Reproduce**
Steps to reproduce the behavior:
* Add break point in [GeoRaster's constructor](https://github.com/GeoTIFF/georaster/blob/master/src/index.js#L58)
* Call `parseGeoraster(https://path.to/cog.tiff, { projection: "example" })`

**Expected behavior**
Metadata is expected to be used. When `parseGeoraster`'s input is an ArrayBuffer, it is used.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: MacOS
- Browser: Chrome
- Version: 116

**Additional context**
I see that there are other types of inputs where metadata is not passed as well.