[FEATURE]: Support Home and End buttons in the input

[watzon]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

As of right now the Home and End buttons don't work as intended. Instead of moving the cursor to the beginning/end of the current line it causes the entire chat history back and forth.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Home/End keys navigate history instead of moving cursor within prompt #7190: Home/End keys navigate history instead of moving cursor within prompt (this is the primary duplicate - already tracked as part of keybinds)
• [FEATURE]: Action like input_line_home (and _end), but only for the wrapped pseudo-line #7238: Related keyboard navigation feature for wrapped pseudo-lines

For keybind-related issues, please also check our pinned keybinds documentation: #4997