TextBox: Data-type validation for max chars (fixes #18817) (#20843)

* configure max chars for textbox

* min 1

* Adds server-side check for text box min and max character validation.

* Applied suggestion from code review.

* Bumped version of test helper

* Fixed test that was creating a text string data type with too large a maximum characters setting.

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Co-authored-by: Andy Butland <abutland73@gmail.com>
Co-authored-by: Nhu Dinh <hnd@umbraco.dk>

tests/Umbraco.Tests.AcceptanceTest/package.json

@@ -23,7 +23,7 @@
   },
   "dependencies": {
     "@umbraco/json-models-builders": "^2.0.42",
-    "@umbraco/playwright-testhelpers": "^17.0.8",
+    "@umbraco/playwright-testhelpers": "^17.0.9",
     "camelize": "^1.0.0",
     "dotenv": "^16.3.1",
     "node-fetch": "^2.6.7"