fix(text.class.js) added pathStartOffset and pathSide to props lists

[melchiar]

The new pathStartOffset and pathSide properties were missing from the toObject property list, the dimensionAffectingProps list, and the additionalProps list.

[asturur]

Fixing tests is a pain here

[asturur]

why we delete them?

[asturur]

well deleting them for now is ok is fine disregard this comment.

[github-actions]

Code Coverage Summary

> fabric@4.5.1 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  |   83.32 |    77.07 |   86.02 |   83.03 |                                               
 fabric.js |   83.32 |    77.07 |   86.02 |   83.03 | ...,29854,29979,30059-30124,30247,30346,30563 
-----------|---------|----------|---------|---------|-----------------------------------------------