fix upscale logic

[w-e-w]

Description

• issue reported by [Bug]: Upscaler.py causes infinite loop (fix inside) #16234

note the "infinite loop" description is incorrect

when using a Non-1x upscaller but if the Scale is set to 1x, there will be no check for the current image size, and will casue the upscale to loop until the max range 3 is reached

desired behavior

	1x model	4x modle
1x scale	run 1 time	run 1 time
4x scale	run 1 time	run 1 time
8x scale	run 1 time	run 2 time

current behavior

	1x model	4x modle
1x scale	run 1 time	run till max loop
4x scale	run 1 time	run 1 time
8x scale	run 1 time	run 2 time

this PR fix the 4x model + 1x scale -> run till max loop issue

Checklist:

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests