Stablize Caption Banner component

[carocao-msft]

What

Captions Banner Component change from internal component to public component

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]

Storybook 8 URL https://60c7ae6891f0e90039d7cd54-ozmlertywt.chromatic.com/

[github-actions]

Calling bundle size is not changed.

• Current size: 11767065
• Base size: 11767065
• Diff size: 0

[github-actions]

Chat bundle size is increased❗.

• Current size: 1762337
• Base size: 1762268
• Diff size: 69

[github-actions]

CallWithChat bundle size is not changed.

• Current size: 11767078
• Base size: 11767078
• Diff size: 0

[github-actions]

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

	Lines	Statements	Functions	Branches
Base	27513 / 43432 63.34%	27513 / 43432 63.34%	771 / 1368 56.35%	2340 / 3651 64.09%
Current	27459 / 43473 63.16%	27459 / 43473 63.16%	771 / 1368 56.35%	2334 / 3642 64.08%
Diff	-54 / 41 -0.18%	-54 / 41 -0.18%	0 / 0 0%	-6 / -9 -0.01%

[github-actions]

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

	Lines	Statements	Functions	Branches
Base	55404 / 90343 61.32%	55404 / 90343 61.32%	1147 / 2589 44.3%	3425 / 5573 61.45%
Current	55410 / 90378 61.3%	55410 / 90378 61.3%	1147 / 2589 44.3%	3406 / 5565 61.2%
Diff	6 / 35 -0.02%	6 / 35 -0.02%	0 / 0 0%	-19 / -8 -0.25%

[github-actions]

Storybook 8 URL https://60c7ae6891f0e90039d7cd54-ywyszuiuyr.chromatic.com/