fix: cursor jumps in input two way binding

[fabhari]

Old Fix: Restore input binding selection position (#14649) .
Current Fix: Remove unnecessary cursor manipulation written for (#14649) as the presence of runes no longer requires special handling.

This fix closes #16634

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Playground

pnpm add https://pkg.pr.new/svelte@16649

[7nik]

This breaks a case like this (compare to the latest version)

<input bind:value={() => name, v => name = v.toUpperCase()} />

To elaborate: the input and the variable get desynced.

[fabhari]

Hey @7nik Thanks for highlighting that.
hope have fixed the issue by syncing the set and get operations using promises. tested it with a few cases, but if you come across any other failed tests, please let me know.