fix(imageCache): fixing image cache encoding

[bassrock]

Summary

When using the Pocket Image cache urls need to be URL encoded. Before we were letting URLComponents just do its own thing, which only partially encoded the underlying image url.

We needed to explicitly encode the image url so that the ImageCache service can decode it to the right location.

References

• IN-1222

Implementation Details

Encoded the image URL explicit following some legacy code in legacy pocket. Will link upon request in slack (to not post the old repo here)

Test Steps

• Use Proxyman to watch the image cache and see the requested URLs are all urlencoded as the last part of the path for the Image request

PR Checklist:

• Added Unit / UI tests
• Self Review (review, clean up, documentation, run tests)
• Basic Self QA

Screenshots