fix(): 5.x Disable offscreen check for bg and overlay when not needed

[asturur]

Motivation

this issue #8887 points out that the current overlap between those 2 features is not working as expect.

A background or an overlay that does not move with the viewport is never offscreen.

closes #8887

Changes

An object used as background or overlay , with overlayVpt or backgroundVpt set as false will always be rendered regardless of the vpt.
If the developer place it offscreen on purpose or by mistake, it will pay a render cost.

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.48 |    77.33 |   86.34 |    83.2 |                                               
 fabric.js |   83.48 |    77.33 |   86.34 |    83.2 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.48 |    77.31 |   86.34 |    83.2 |                                               
 fabric.js |   83.48 |    77.31 |   86.34 |    83.2 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |    83.5 |    77.41 |   86.34 |   83.23 |                                               
 fabric.js |    83.5 |    77.41 |   86.34 |   83.23 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |    83.5 |    77.41 |   86.34 |   83.23 |                                               
 fabric.js |    83.5 |    77.41 |   86.34 |   83.23 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |    83.5 |    77.41 |   86.34 |   83.23 |                                               
 fabric.js |    83.5 |    77.41 |   86.34 |   83.23 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |    83.5 |    77.41 |   86.34 |   83.23 |                                               
 fabric.js |    83.5 |    77.41 |   86.34 |   83.23 | ...,30328,30453,30533-30598,30721,30820,31037 
-----------|---------|----------|---------|---------|-----------------------------------------------