feat(ui5-li): add text wrapping support

[kgogov]

Description

The standard list item ui5-li now supports content wrapping through a publicly available wrappingType property. When set to "Normal", long text content (title and description) will wrap to multiple lines instead of truncating with an ellipsis.

Key features:

• Responsive behavior based on screen size:
  • On mobile (size S): Text truncates after 100 characters
  • On tablets/desktop (size M/L): Text truncates after 300 characters
• "Show More/Less" functionality for very long content using ui5-expandable-text
• Works for both title and description fields
• CSS styling to ensure proper layout in different states

Implementation details:

• Made wrappingType property public available with options "None" (default) and "Normal"
• Conditionally render content using ui5-expandable-text component when wrappingType is "Normal"
• Added _maxCharacters getter to determine truncation point based on media range
• Updated ListItemStandardTemplate to handle wrapped content rendering
• Updated CSS selectors to use wrapping-type attribute
• Updated HTML test page with examples
• Added ListItemStandardExpandableText.ts to support preloading the expandable text feature

Documentation:

• Added new section in List.mdx explaining the wrapping behavior
• Created a sample in WrappingBehavior folder
• Added JSDoc descriptions for the new property
• ⭐ Added note about deprecated usage of default slot in favor of text property
• Updated the features documentation to include information about preloading the expandable text feature

Tests:

• Added desktop test for 300 character limit
• Added mobile-specific test for 100 character limit
• Added test for toggling wrappingType property

NOTE: This change also promotes the use of the text property (added in v2.10.0) instead of the default slot content for setting list item text. The default slot usage is now deprecated and will be removed in a future version.

Implements: #9745