Follow-up: YiR entry dialog code optimization

[cooltey]

What does this do?

A follow-up PR of #5465 that does the following optimization:

• Renames classes to EntryDialog instead of a plain Dialog.
• Renames BottomSheetScaffold to YearInReviewEntryDialogScreen, since there might be another bottomsheet that exists in the YiR package, and also for easier access.
• Renames the string resources with entry_dialog in them.
• Optimizes the scrolling experience.
• Optimizes the padding for title, body text, and the image - the current image is cut because of the centerCrop.

@voyagerfan Please help review, and we can discuss this in our 1:1 for you to have a better picture of this PR.

[voyagerfan]

Hi Cooltey, the naming convention you're using looks good - I'll be mindful that as well as the padding values in the next PR.