fix(cli): fix Prompt.text clear when input wraps terminal lines

When the user's input in `Prompt.text` exceeds the terminal width and
wraps to a new line, `renderClearScreen` miscalculates lines to erase
because it only considers `options.message`, not the full rendered line
including the input value.

This causes duplicate prompt lines to be printed on each keystroke after
the text wraps.

The fix calculates the full rendered line length:
`"? " + message + " › " + inputValue`

This is the same root cause as #5978 (for Prompt.select), and applies
the equivalent fix to Prompt.text.

Closes #5978

Author: m9tdev

packages/cli/src/internal/prompt/text.ts

@@ -49,7 +49,10 @@ function renderClearScreen(state: State, options: Options) {
         )
     })
     // Ensure that the prior prompt output is cleaned up
-    const clearOutput = InternalAnsiUtils.eraseText(options.message, columns)
+    // Calculate full rendered line: "? " + message + " › " + input
+    const inputValue = state.value.length > 0 ? state.value : options.default
+    const fullLine = `? ${options.message} \u203a ${inputValue}`
+    const clearOutput = InternalAnsiUtils.eraseText(fullLine, columns)
     // Concatenate and render all documents
     return clearError.pipe(
       Doc.cat(clearOutput),