[TextareaAutosize] Export component in barrel index.js

[Shubhamchinda]

Fixes #17002

@joshwooding

[mui-pr-bot]

Details of bundle changes.

Comparing: 7d01949...a6776e8

bundle	parsed diff	gzip diff	prev parsed	current parsed	prev gzip	current gzip
@material-ui/core	+0.02% 🔺	+0.01% 🔺	328,898	328,948	89,914	89,926
@material-ui/core/Paper	0.00%	0.00%	68,684	68,684	20,476	20,476
@material-ui/core/Paper.esm	0.00%	0.00%	62,058	62,058	19,206	19,206
@material-ui/core/Popper	0.00%	0.00%	28,468	28,468	10,177	10,177
@material-ui/core/Textarea	0.00%	-0.05%	5,094	5,094	2,136	2,135
@material-ui/core/TrapFocus	0.00%	0.00%	3,834	3,834	1,614	1,614
@material-ui/core/styles/createMuiTheme	0.00%	0.00%	16,386	16,386	5,826	5,826
@material-ui/core/useMediaQuery	0.00%	0.00%	2,541	2,541	1,059	1,059
@material-ui/lab	0.00%	0.00%	152,999	152,999	46,659	46,660
@material-ui/styles	0.00%	0.00%	51,401	51,402	15,290	15,290
@material-ui/system	0.00%	-0.02%	15,658	15,658	4,361	4,360
Button	0.00%	0.00%	78,687	78,688	24,044	24,045
Modal	0.00%	-0.02%	14,346	14,346	5,011	5,010
Portal	0.00%	0.00%	2,907	2,907	1,318	1,318
Rating	0.00%	0.00%	70,047	70,047	21,881	21,881
Slider	0.00%	0.00%	74,362	74,363	23,056	23,056
colorManipulator	0.00%	0.00%	3,904	3,904	1,543	1,543
docs.landing	0.00%	0.00%	51,846	51,846	13,780	13,780
docs.main	0.00%	0.00%	590,557	590,557	188,449	188,449
packages/material-ui/build/umd/material-ui.production.min.js	+0.01% 🔺	+0.02% 🔺	299,897	299,919	86,270	86,287

Generated by 🚫 dangerJS against a6776e8

[ArrayKnight]

Thanks for the quick and easy fix 🚀

[oliviertassinari]

For once, it's the JavaScript version that is wrong, not the TypeScript one :)

[oliviertassinari]

Well done!