refact: update the media item modal loader to load all images until current

[rutviksavsani]

Summary

Fixes broken media library navigation when accessing items beyond the initial page load via direct URL after a page refresh.

Trac ticket: https://core.trac.wordpress.org/ticket/54091

Solution

Implemented a two-phase loading strategy:

1. Immediate fetch - Opens the item instantly as it currently does.
2. Background context loading - Recursively loads library batches until the item is found in the collection, then enables navigation.

Changes Made

src/js/media/routers/manage.js

• Added recursive batch loading to load all the images in library till the image found in the backend.
• Updates edit frame model once item is found in collection to enable navigation.

src/js/media/views/frame/edit-attachments.js

• Added -1 index check to hasNext() and hasPrevious()

Screen Recording

https://github.com/user-attachments/assets/a1a9dfae-b62f-46af-9e28-866bae98f40f

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