Checking for requested image dimensions while preventing percentage errors

[hudajkhan]

Closes #1082 and sul-dlss/sul-embed#1949.

Context:
We had to revert an earlier commit for asking the IIIF server for the original size of an image when the requested dimensions were larger than the original image size: #1070 . With this original change, requests for percentage regions were resulting in an error documented here: #1069 . e.g. when the request looks like https://stacks.stanford.edu/image/iiif/cp798vs8827/6855100/pct:3,3,77,77/full/0/default.jpg .

Explanation of error:
As part of the original changes, we added a check for "use_original_size?" in the real_transformation method. This check executed "max_tile_dimensions" on the image object which in turn executes "region_dimensions" in projection.rb. This last method will raise an error for a percent region request. With the original change, this error was being thrown whenever the percent region URLs were requested, resulting in the page not loading correctly.

For reference, see https://github.com/sul-dlss/stacks/blob/main/app/models/stacks_image.rb#L43 and https://github.com/sul-dlss/stacks/blob/main/app/models/projection.rb#L32 .

What this pull request does:

• Re-applies the original logic for handling image size requests that are larger than the original image dimensions by returning the original size dimensions instead.
• Re-adds test for the case where the requested dimensions are larger than the original
• When the "use_original_size?" method is called, this method will return false if the region is a percent type.
• Within "use_original_size?", adds a rescue block for any other errors that may be thrown by region_dimensions and returns false by default for that situation, as well as doing a honeybadger notification.
• Adds test for the "use_original_size?" methods to ensure it returns false for percent region and checks for a few other conditions.