fix(fabric.Object): Cache CropX and CropY Object Properties

[rileygowan]

In response to #6907, add cropX and cropY to fabric.Image's list of cacheProperties.

/**
* cacheProperties:
* List of properties to consider when checking if cache needs refresh
* Those properties are checked by statefullCache ON ( or lazy mode if we want ) or from single
* calls to Object.set(key, value). If the key is in this list, the object is marked as dirty
* and refreshed at the next render
*/

Demo made using https://codepen.io/xh4010/pen/ZEBjrqe, but without explicitly setting dirty: true:

close #6907

[github-actions]

Code Coverage Summary

> fabric@4.3.1 coverage:report /home/runner/work/fabric.js/fabric.js
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.68 |    76.91 |    85.6 |   82.45 |                                               
 fabric.js |   82.68 |    76.91 |    85.6 |   82.45 | ...,29586,29711,29791-29856,29979,30078,30295 
-----------|---------|----------|---------|---------|-----------------------------------------------

[asturur]

Thanks!

[asturur]

oops @rileygowan! we added it in fabric.Object, while this is specific of fabric.Image !

[github-actions]

Code Coverage Summary

> fabric@4.3.1 coverage:report /home/runner/work/fabric.js/fabric.js
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.68 |     76.9 |    85.6 |   82.45 |                                               
 fabric.js |   82.68 |     76.9 |    85.6 |   82.45 | ...,29595,29720,29800-29865,29988,30087,30304 
-----------|---------|----------|---------|---------|-----------------------------------------------

[asturur]

Thank you!