Webp closes on dropdown Gesture

[RaJansuMan]

What is it?

• Bugfix
• Feature
• Codebase improvement

Description of the changes in your PR

• Added a variable to retrieve the initial zoom level from GestureImageView, as it may not always initialize with a 1f zoom.
• Introduced a boolean flag to ensure only initial zoom is set.
• Added a maximum zoom difference threshold to account for minor decimal variations when zooming out, as double tap zoom out may occasionally not reset to the exact same initial value.

Before/After Screenshots/Screen Record

• Before:

Record_2025-02-28-16-08-41.mp4

• After:

Record_2025-02-28-16-07-19.1.mp4

Fixes the following issue(s)

• Fixes .webp files do not close on swipe down gesture .webp files do not close on swipe down gesture #362

Acknowledgement

• I read the contribution guidelines.

[naveensingh]

Seems to work fine, thanks!

Two things:

• Please format the code
• Rename MAX_ZOOM_DIFFERENCE to MAX_ZOOM_TOLERANCE or something more descriptive to indicate what it's for.