fix(platform): select - fix CVA behavior and remove extra methods

[dmitry-stepanenko]

Related Issue(s)

related to #6866

Description

Added ngx-cva-test-suite for platform-select component. It was required to make some minor changes in order to fulfill requirements of standard behavior for CVA. Also made some cleanup to get rid of unnecessary methods.

Breaking changes:

• source has been removed from FdpSelectionChangeEvent, FdpSelectionChangeEvent itself is now deprecated
• valueChange output has been removed as it completely duplicates selectionChange output

Screenshots

Before:

After:

Please check whether the PR fulfills the following requirements

During Implementation

1. Visual Testing:

• [n/a] visual misalignments/updates
• [n/a] check Light/Dark/HCB/HCW themes
• [n/a] RTL/LTR - proper rendering and labeling
• [n/a] responsiveness(resize)
• [n/a] Content Density (Cozy/Compact/(Condensed))
• States - hover/disabled/focused/active/on click/selected/selected hover/press state
• Interaction/Animation - open/close, expand/collapse, add/remove, check/uncheck
• Mouse vs. Keyboard support
• [n/a] Text Truncation

2. API and functional correctness

• check for console logs (warnings, errors)
• [n/a] API boundary values
• [n/a] different combinations of components - free style
• [n/a] change the API values during testing

3. Documentation and Example validations

• [n/a] missing API documentation or it is not understandable
• [n/a] poor examples
• Stackblitz works for all examples

4. Accessibility testing
5. Browser Testing - Edge, Safari, Chrome, Firefox

PR Quality

• the commit message(s) follows the guideline:
  https://github.com/SAP/fundamental-ngx/blob/main/CONTRIBUTING.md
• tests for the changes that have been done
• all items on the PR Review Checklist are addressed :
  https://github.com/SAP/fundamental-ngx/wiki/PR-Review-Checklist
• [n/a] Run npm run build-pack-library and test in external application
• [n/a] update README.md
• Breaking Changes Wiki

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[github-actions]

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