Set RTE toggle visual state to default to checked.

[palatter]

What

Why

How Tested

Process & policy checklist

• I have updated the project documentation to reflect my changes if necessary.
• I have read the CONTRIBUTING documentation.

Is this a breaking change?

• This change causes current functionality to break.

[github-actions]

Calling bundle size is not changed.

• Current size: 11750180
• Base size: 11750180
• Diff size: 0

[github-actions]

Chat bundle size is increased❗.

• Current size: 1756786
• Base size: 1756768
• Diff size: 18

[github-actions]

CallWithChat bundle size is not changed.

• Current size: 11750193
• Base size: 11750193
• Diff size: 0

[github-actions]

@azure/communication-react jest test coverage for stable.

	Lines	Statements	Functions	Branches
Base	26670 / 42998 62.02%	26670 / 42998 62.02%	729 / 1332 54.72%	2123 / 3399 62.45%
Current	26723 / 42998 62.14%	26723 / 42998 62.14%	729 / 1332 54.72%	2110 / 3400 62.05%
Diff	53 / 0 0.12%	53 / 0 0.12%	0 / 0 0%	-13 / 1 -0.4%

[github-actions]

@azure/communication-react jest test coverage for beta.

	Lines	Statements	Functions	Branches
Base	54050 / 88314 61.2%	54050 / 88314 61.2%	1096 / 2484 44.12%	3202 / 5294 60.48%
Current	54080 / 88315 61.23%	54080 / 88315 61.23%	1096 / 2484 44.12%	3194 / 5288 60.4%
Diff	30 / 1 0.03%	30 / 1 0.03%	0 / 0 0%	-8 / -6 -0.08%