Use block character as cursor placeholder (#222)

Author: natemoo-re

.changeset/red-glasses-grin.md

@@ -0,0 +1,5 @@
+---
+"@clack/core": patch
+---
+
+Fixes a cursor display bug in terminals that do not support the "hidden" escape sequence. See [Issue #127](https://github.com/bombshell-dev/clack/issues/127).

packages/core/src/prompts/text.ts

@@ -12,7 +12,7 @@ export default class TextPrompt extends Prompt {
 			return this.value;
 		}
 		if (this.cursor >= this.value.length) {
-			return `${this.value}${color.inverse(color.hidden('_'))}`;
+			return `${this.value}█`;
 		}
 		const s1 = this.value.slice(0, this.cursor);
 		const [s2, ...s3] = this.value.slice(this.cursor);