Component: Extract getNodeText to its own file and add unit tests

[im3dabasia]

Related PR: #54902
Related Issue: #55495

What?

Closes: #55495
Extracts getNodeText into its own file, adds unit tests, and refactors unused code.

Why?

The original implementation was merged quickly to address an accessibility issue (#47767). This PR improves maintainability by isolating the function, adding tests, and removing unnecessary code.

How?

• Moved getNodeText to a separate file.
• Added unit tests to verify expected behavior.
• Removed redundant or unused code from the function.

Testing Instructions

Run the following command to execute unit tests for getNodeText:

npm run test:unit packages/components/src/utils/test/get-node-text.js

Screenshots or screencast

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Co-authored-by: im3dabasia <[email protected]>
Co-authored-by: alexstine <[email protected]>
Co-authored-by: jeryj <[email protected]>

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[im3dabasia]

Hey @Mamaduka ,

When you have a moment please review my PR.

Thank you