ENGCOM-2578: [Forwardport] Disable autocomplete for captcha inputs #17198

 - Merge Pull Request #17198 from mage2pratik/magento2:2.3-develop-PR-port-17114
 - Merged commits:
   1. ce5cb9a

Author: magento-engcom-team

app/code/Magento/Captcha/view/frontend/templates/default.phtml

@@ -14,7 +14,7 @@ $captcha = $block->getCaptchaModel();
 <div class="field captcha required" role="<?= $block->escapeHtmlAttr($block->getFormId()) ?>">
     <label for="captcha_<?= $block->escapeHtmlAttr($block->getFormId()) ?>" class="label"><span><?= $block->escapeHtml(__('Please type the letters and numbers below')) ?></span></label>
     <div class="control captcha">
-        <input name="<?= $block->escapeHtmlAttr(\Magento\Captcha\Helper\Data::INPUT_NAME_FIELD_VALUE) ?>[<?= $block->escapeHtmlAttr($block->getFormId()) ?>]" type="text" class="input-text required-entry" data-validate="{required:true}" id="captcha_<?= $block->escapeHtmlAttr($block->getFormId()) ?>" />
+        <input name="<?= $block->escapeHtmlAttr(\Magento\Captcha\Helper\Data::INPUT_NAME_FIELD_VALUE) ?>[<?= $block->escapeHtmlAttr($block->getFormId()) ?>]" type="text" class="input-text required-entry" data-validate="{required:true}" id="captcha_<?= $block->escapeHtmlAttr($block->getFormId()) ?>" autocomplete="off"/>
         <div class="nested">
             <div class="field captcha no-label"
                  data-captcha="<?= $block->escapeHtmlAttr($block->getFormId()) ?>"

app/code/Magento/Captcha/view/frontend/web/template/checkout/captcha.html

@@ -8,7 +8,7 @@
 <div class="field captcha required" data-bind="blockLoader: getIsLoading()">
     <label data-bind="attr: {for: 'captcha_' + formId}" class="label"><span data-bind="i18n: 'Please type the letters and numbers below'"></span></label>
     <div class="control captcha">
-        <input name="captcha_string" type="text" class="input-text required-entry" data-bind="value: captchaValue(), attr: {id: 'captcha_' + formId, 'data-scope': dataScope}" />
+        <input name="captcha_string" type="text" class="input-text required-entry" data-bind="value: captchaValue(), attr: {id: 'captcha_' + formId, 'data-scope': dataScope}" autocomplete="off"/>
         <input name="captcha_form_id" type="hidden" data-bind="value: formId,  attr: {'data-scope': dataScope}" />
         <div class="nested">
             <div class="field captcha no-label">