fix(Textbox): expose methods for overrides + fix resize filckering

[ShaMan123]

The first 2 methods are to make text more accessible from subclassing

1. graphemeSplit on instance

2. wordSplit

3. fixed line wrapping when word > width
   BEFORE
   

FIXED

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.23 |    76.64 |    86.4 |   82.96 |                                               
 fabric.js |   83.23 |    76.64 |    86.4 |   82.96 | ...,29877,30002,30082-30147,30270,30369,30595 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.19 |     76.6 |   86.41 |   82.92 |                                               
 fabric.js |   83.19 |     76.6 |   86.41 |   82.92 | ...,29877,30002,30082-30147,30270,30369,30602 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.19 |     76.6 |   86.41 |   82.92 |                                               
 fabric.js |   83.19 |     76.6 |   86.41 |   82.92 | ...,29878,30003,30083-30148,30271,30370,30603 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.19 |     76.6 |   86.41 |   82.92 |                                               
 fabric.js |   83.19 |     76.6 |   86.41 |   82.92 | ...,29878,30003,30083-30148,30271,30370,30603 
-----------|---------|----------|---------|---------|-----------------------------------------------

[asturur]

This seems good, just give some explanation on why we are not using the offset information on the first pass of measuring.
If we do, then we don't need to remeasure later, we can use cached measures.
Or am i missing the point of that double loop?
(i think i because we want to know immediately which is the large word of all text before we take decisions on intermediate long words

[ShaMan123]

i think i because we want to know immediately which is the large word of all text before we take decisions on intermediate long words

Absolutely!
Did I miss styles or something in the first pass?

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.23 |     76.6 |   86.41 |   82.96 |                                               
 fabric.js |   83.23 |     76.6 |   86.41 |   82.96 | ...,29878,30003,30083-30148,30271,30370,30603 
-----------|---------|----------|---------|---------|-----------------------------------------------

[ShaMan123]

I don't think a util should be overridden, that's why I've exposed graphemeSplit
Renamed _measureWord to measureWord and made it public. Crucial for overrides and completes what I was after.
But is kind of BREAKING (the method was private so not so much)

[ShaMan123]

2 tests are failing, no idea why yet FIXED

[ShaMan123]

Good on my end.
Ready to merge

[github-actions]

Code Coverage Summary

> fabric@5.1.0 coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   83.19 |    76.56 |   86.41 |   82.91 |                                               
 fabric.js |   83.19 |    76.56 |   86.41 |   82.91 | ...,29879,30004,30084-30149,30272,30371,30607 
-----------|---------|----------|---------|---------|-----------------------------------------------

[asturur]

this is a good nice fix and improvement.
And of little scope, thanks.